{
  "checked_at_utc": "2026-09-09T12:44:50.053752+00:00",
  "audit": "v2",
  "status": "complete",
  "source_code": {
    "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
    "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073"
  },
  "selection_policy": "user-rich-short-history-v1",
  "eval_user_target": 1000,
  "profiles": [
    {
      "category": "All_Beauty",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 2,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 2263,
            "test_users": 2263
          },
          "stats": {
            "users": 22273,
            "items": 11834,
            "pairs": 45509,
            "train_users": 18108,
            "train_items": 11834,
            "train_observed_items": 11834,
            "val_users": 2097,
            "val_target_pairs": 2234,
            "test_users": 2068,
            "test_target_pairs": 2209,
            "preprocessed_users": 22634,
            "preprocessed_items": 12105,
            "preprocessed_pairs": 57127,
            "val_target_items": 1826,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 11834,
            "test_target_items": 1854,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 11834
          },
          "warnings": [
            "Below the preferred size range; support filtering cannot add data",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "04944b78d206e6be2c1baa115866677fffe5579d9dc361675be1f37f80ad3cb1",
            "profile_sha256": "f0ed0675509d7ab3adb53531e80c69a0f5ca14a274fc3c3a8112ecee580c1709",
            "checked_at_utc": "2026-09-09T06:40:18.713796+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 2,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 22151,
            "items": 12105,
            "pairs": 48222,
            "train_users": 22151,
            "train_items": 12105,
            "train_observed_items": 10288,
            "val_users": 2414,
            "val_target_pairs": 2534,
            "test_users": 4813,
            "test_target_pairs": 5396,
            "preprocessed_users": 22634,
            "preprocessed_items": 12105,
            "preprocessed_pairs": 57127,
            "val_target_items": 602,
            "val_cold_target_items": 602,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 12105,
            "test_target_items": 1203,
            "test_cold_target_items": 1203,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 12105
          },
          "warnings": [
            "Below the preferred size range; support filtering cannot add data",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "04944b78d206e6be2c1baa115866677fffe5579d9dc361675be1f37f80ad3cb1",
            "profile_sha256": "f0ed0675509d7ab3adb53531e80c69a0f5ca14a274fc3c3a8112ecee580c1709",
            "checked_at_utc": "2026-09-09T06:40:20.175361+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 4,
            "item_min_support": 1,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 2909,
            "items": 10266,
            "pairs": 13878,
            "train_users": 2909,
            "train_items": 10266,
            "train_observed_items": 7242,
            "val_users": 2909,
            "val_target_pairs": 2909,
            "test_users": 2909,
            "test_target_pairs": 2909,
            "preprocessed_users": 2909,
            "preprocessed_items": 10266,
            "preprocessed_pairs": 19696,
            "val_target_items": 2503,
            "val_cold_target_items": 1515,
            "val_cold_target_item_fraction": 0.6052736715940871,
            "val_catalog_items": 10266,
            "test_target_items": 2487,
            "test_cold_target_items": 1602,
            "test_cold_target_item_fraction": 0.6441495778045838,
            "test_catalog_items": 10266
          },
          "warnings": [
            "Below the preferred size range; support filtering cannot add data",
            "More items than users",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "04944b78d206e6be2c1baa115866677fffe5579d9dc361675be1f37f80ad3cb1",
            "profile_sha256": "f0ed0675509d7ab3adb53531e80c69a0f5ca14a274fc3c3a8112ecee580c1709",
            "checked_at_utc": "2026-09-09T06:40:20.416646+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 3,
            "item_min_support": 1,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 3622,
            "items": 10734,
            "pairs": 12649,
            "train_users": 2171,
            "train_items": 7173,
            "train_observed_items": 7173,
            "val_users": 1410,
            "val_target_pairs": 2492,
            "test_users": 670,
            "test_target_pairs": 1016,
            "val_target_items": 1657,
            "val_cold_target_items": 1344,
            "val_cold_target_item_fraction": 0.8111044055522028,
            "val_catalog_items": 9855,
            "test_target_items": 618,
            "test_cold_target_items": 556,
            "test_cold_target_item_fraction": 0.8996763754045307,
            "test_catalog_items": 10734
          },
          "warnings": [
            "Fewer than 1,000 eligible users in validation or test",
            "Below the preferred size range; support filtering cannot add data",
            "More items than users",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "04944b78d206e6be2c1baa115866677fffe5579d9dc361675be1f37f80ad3cb1",
            "profile_sha256": "f0ed0675509d7ab3adb53531e80c69a0f5ca14a274fc3c3a8112ecee580c1709",
            "checked_at_utc": "2026-09-09T06:40:20.697407+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "04944b78d206e6be2c1baa115866677fffe5579d9dc361675be1f37f80ad3cb1",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/All_Beauty.csv",
            "sha256": "2b3cdf7687851496e194cc3a275b1f89f19cd24d7e8b9860a4676ff9b8f795fb"
          },
          {
            "url": "https://mcauleylab.ucsd.edu/public_datasets/data/amazon_2023/raw/meta_categories/meta_All_Beauty.jsonl.gz",
            "sha256": "51f8255c2794afd60e274c10d3e2d09dc1f671eba4ba35f74f748d8631216d05"
          }
        ]
      }
    },
    {
      "category": "Amazon_Fashion",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 4,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 3571,
            "test_users": 3571
          },
          "stats": {
            "users": 35683,
            "items": 10206,
            "pairs": 68051,
            "train_users": 28572,
            "train_items": 10206,
            "train_observed_items": 10206,
            "val_users": 3551,
            "val_target_pairs": 3700,
            "test_users": 3560,
            "test_target_pairs": 3655,
            "preprocessed_users": 35714,
            "preprocessed_items": 10217,
            "preprocessed_pairs": 85214,
            "val_target_items": 2779,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 10206,
            "test_target_items": 2692,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 10206
          },
          "warnings": [
            "Below the preferred size range; support filtering cannot add data",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "ea6a5fb420b351af0f9098d5991aa51aa7496fc0792a4f49d42216e0e9bf1475",
            "profile_sha256": "d37e583eb827b54d1fc7b8929758e1fe8b08f0d53c27d7a5419b5108a5529057",
            "checked_at_utc": "2026-09-09T06:40:22.383796+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 4,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 35103,
            "items": 10217,
            "pairs": 72875,
            "train_users": 35103,
            "train_items": 10217,
            "train_observed_items": 8684,
            "val_users": 3762,
            "val_target_pairs": 3889,
            "test_users": 6772,
            "test_target_pairs": 7219,
            "preprocessed_users": 35714,
            "preprocessed_items": 10217,
            "preprocessed_pairs": 85214,
            "val_target_items": 511,
            "val_cold_target_items": 511,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 10217,
            "test_target_items": 1022,
            "test_cold_target_items": 1022,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 10217
          },
          "warnings": [
            "Below the preferred size range; support filtering cannot add data",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "ea6a5fb420b351af0f9098d5991aa51aa7496fc0792a4f49d42216e0e9bf1475",
            "profile_sha256": "d37e583eb827b54d1fc7b8929758e1fe8b08f0d53c27d7a5419b5108a5529057",
            "checked_at_utc": "2026-09-09T06:40:24.623255+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 4,
            "item_min_support": 2,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 1717,
            "items": 4098,
            "pairs": 11044,
            "train_users": 1717,
            "train_items": 4098,
            "train_observed_items": 3788,
            "val_users": 1717,
            "val_target_pairs": 1717,
            "test_users": 1717,
            "test_target_pairs": 1717,
            "preprocessed_users": 1717,
            "preprocessed_items": 4098,
            "preprocessed_pairs": 14478,
            "val_target_items": 1292,
            "val_cold_target_items": 200,
            "val_cold_target_item_fraction": 0.15479876160990713,
            "val_catalog_items": 4098,
            "test_target_items": 1190,
            "test_cold_target_items": 252,
            "test_cold_target_item_fraction": 0.21176470588235294,
            "test_catalog_items": 4098
          },
          "warnings": [
            "Below the preferred size range; support filtering cannot add data",
            "More items than users",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "ea6a5fb420b351af0f9098d5991aa51aa7496fc0792a4f49d42216e0e9bf1475",
            "profile_sha256": "d37e583eb827b54d1fc7b8929758e1fe8b08f0d53c27d7a5419b5108a5529057",
            "checked_at_utc": "2026-09-09T06:40:24.806422+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 2,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 3157,
            "items": 4080,
            "pairs": 8888,
            "train_users": 1692,
            "train_items": 2933,
            "train_observed_items": 2933,
            "val_users": 1116,
            "val_target_pairs": 1460,
            "test_users": 791,
            "test_target_pairs": 974,
            "val_target_items": 673,
            "val_cold_target_items": 485,
            "val_cold_target_item_fraction": 0.7206537890044576,
            "val_catalog_items": 3646,
            "test_target_items": 467,
            "test_cold_target_items": 374,
            "test_cold_target_item_fraction": 0.8008565310492506,
            "test_catalog_items": 4080
          },
          "warnings": [
            "Fewer than 1,000 eligible users in validation or test",
            "Below the preferred size range; support filtering cannot add data",
            "More items than users",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "ea6a5fb420b351af0f9098d5991aa51aa7496fc0792a4f49d42216e0e9bf1475",
            "profile_sha256": "d37e583eb827b54d1fc7b8929758e1fe8b08f0d53c27d7a5419b5108a5529057",
            "checked_at_utc": "2026-09-09T06:40:26.254514+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "ea6a5fb420b351af0f9098d5991aa51aa7496fc0792a4f49d42216e0e9bf1475",
        "sources": [
          {
            "url": "https://mcauleylab.ucsd.edu/public_datasets/data/amazon_2023/benchmark/0core/rating_only/Amazon_Fashion.csv.gz",
            "sha256": "7d08f3ad3ec331eb95cabf5a85c8e65f82f958429a17131e6d391f54532c0310"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw/meta_categories/meta_Amazon_Fashion.jsonl",
            "sha256": "629dde620a4001934a8af705f6e5514a1b2d349720c26876ee803b90051a62df"
          }
        ]
      }
    },
    {
      "category": "Appliances",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 3,
            "item_min_support": 2,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 5000,
            "test_users": 5000
          },
          "stats": {
            "users": 51832,
            "items": 19078,
            "pairs": 153605,
            "train_users": 42101,
            "train_items": 19078,
            "train_observed_items": 19078,
            "val_users": 4872,
            "val_target_pairs": 5205,
            "test_users": 4859,
            "test_target_pairs": 5196,
            "preprocessed_users": 52101,
            "preprocessed_items": 19327,
            "preprocessed_pairs": 190122,
            "val_target_items": 3391,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 19078,
            "test_target_items": 3277,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 19078
          },
          "warnings": [
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "51e1f6d486814198320d401f3bdb900b96e966b583471a40e669b7a992f4aebb",
            "profile_sha256": "55622e7b7f7640abcd61a012e90bae1832c9ba776de4548b7b6c034d40c8e275",
            "checked_at_utc": "2026-09-09T06:40:28.191947+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 3,
            "item_min_support": 2,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 51984,
            "items": 19327,
            "pairs": 160268,
            "train_users": 51984,
            "train_items": 19327,
            "train_observed_items": 16427,
            "val_users": 9980,
            "val_target_pairs": 10821,
            "test_users": 16170,
            "test_target_pairs": 18679,
            "preprocessed_users": 52101,
            "preprocessed_items": 19327,
            "preprocessed_pairs": 190122,
            "val_target_items": 967,
            "val_cold_target_items": 967,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 19327,
            "test_target_items": 1933,
            "test_cold_target_items": 1933,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 19327
          },
          "warnings": [
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "51e1f6d486814198320d401f3bdb900b96e966b583471a40e669b7a992f4aebb",
            "profile_sha256": "55622e7b7f7640abcd61a012e90bae1832c9ba776de4548b7b6c034d40c8e275",
            "checked_at_utc": "2026-09-09T06:40:31.870983+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 4,
            "item_min_support": 2,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 14826,
            "items": 10896,
            "pairs": 43016,
            "train_users": 14826,
            "train_items": 10896,
            "train_observed_items": 9603,
            "val_users": 14826,
            "val_target_pairs": 14826,
            "test_users": 14826,
            "test_target_pairs": 14826,
            "preprocessed_users": 14826,
            "preprocessed_items": 10896,
            "preprocessed_pairs": 72668,
            "val_target_items": 6274,
            "val_cold_target_items": 933,
            "val_cold_target_item_fraction": 0.14870895760280523,
            "val_catalog_items": 10896,
            "test_target_items": 6215,
            "test_cold_target_items": 1074,
            "test_cold_target_item_fraction": 0.17280772325020113,
            "test_catalog_items": 10896
          },
          "warnings": [
            "Below the preferred size range; support filtering cannot add data",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "51e1f6d486814198320d401f3bdb900b96e966b583471a40e669b7a992f4aebb",
            "profile_sha256": "55622e7b7f7640abcd61a012e90bae1832c9ba776de4548b7b6c034d40c8e275",
            "checked_at_utc": "2026-09-09T06:40:32.808614+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 2,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 71639,
            "items": 16820,
            "pairs": 71406,
            "train_users": 27819,
            "train_items": 10232,
            "train_observed_items": 10232,
            "val_users": 28766,
            "val_target_pairs": 32819,
            "test_users": 20484,
            "test_target_pairs": 23512,
            "val_target_items": 8307,
            "val_cold_target_items": 3117,
            "val_cold_target_item_fraction": 0.37522571325388226,
            "val_catalog_items": 14398,
            "test_target_items": 7199,
            "test_cold_target_items": 3444,
            "test_cold_target_item_fraction": 0.4783997777469093,
            "test_catalog_items": 16820
          },
          "warnings": [
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "51e1f6d486814198320d401f3bdb900b96e966b583471a40e669b7a992f4aebb",
            "profile_sha256": "55622e7b7f7640abcd61a012e90bae1832c9ba776de4548b7b6c034d40c8e275",
            "checked_at_utc": "2026-09-09T06:40:33.875824+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "51e1f6d486814198320d401f3bdb900b96e966b583471a40e669b7a992f4aebb",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Appliances.csv",
            "sha256": "14b14b7c6d916fe09db8472cbbb4358c139b04b6eb622303b60b76942d3097e5"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw/meta_categories/meta_Appliances.jsonl",
            "sha256": "b25ae892af7bc452c4a54b7e4fee52f4c3e9adf058768ca3cb07ecb8d328b41e"
          }
        ]
      }
    },
    {
      "category": "Arts_Crafts_and_Sewing",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 5,
            "item_min_support": 16,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 5000,
            "test_users": 5000
          },
          "stats": {
            "users": 97533,
            "items": 18043,
            "pairs": 728532,
            "train_users": 87533,
            "train_items": 18043,
            "train_observed_items": 18043,
            "val_users": 5000,
            "val_target_pairs": 10098,
            "test_users": 5000,
            "test_target_pairs": 10199,
            "preprocessed_users": 97533,
            "preprocessed_items": 18043,
            "preprocessed_pairs": 812118,
            "val_target_items": 6506,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 18043,
            "test_target_items": 6613,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 18043
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "8cb33911024927429289d9ed1d8e7ddd609002dafe136ae224b977257f67fbad",
            "profile_sha256": "e1fbb26ec07f26320aa8fcf3b05a437fd6e07fa03b6d4d0195d8956764c7c748",
            "checked_at_utc": "2026-09-09T06:40:39.529678+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 5,
            "item_min_support": 16,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 97531,
            "items": 18043,
            "pairs": 689186,
            "train_users": 97531,
            "train_items": 18043,
            "train_observed_items": 15335,
            "val_users": 31814,
            "val_target_pairs": 40501,
            "test_users": 52915,
            "test_target_pairs": 82421,
            "preprocessed_users": 97533,
            "preprocessed_items": 18043,
            "preprocessed_pairs": 812118,
            "val_target_items": 903,
            "val_cold_target_items": 903,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 18043,
            "test_target_items": 1805,
            "test_cold_target_items": 1805,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 18043
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "8cb33911024927429289d9ed1d8e7ddd609002dafe136ae224b977257f67fbad",
            "profile_sha256": "e1fbb26ec07f26320aa8fcf3b05a437fd6e07fa03b6d4d0195d8956764c7c748",
            "checked_at_utc": "2026-09-09T06:40:48.342586+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 5,
            "item_min_support": 16,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 97533,
            "items": 18043,
            "pairs": 617052,
            "train_users": 97533,
            "train_items": 18043,
            "train_observed_items": 18043,
            "val_users": 97533,
            "val_target_pairs": 97533,
            "test_users": 97533,
            "test_target_pairs": 97533,
            "preprocessed_users": 97533,
            "preprocessed_items": 18043,
            "preprocessed_pairs": 812118,
            "val_target_items": 16863,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 18043,
            "test_target_items": 16459,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 18043
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "8cb33911024927429289d9ed1d8e7ddd609002dafe136ae224b977257f67fbad",
            "profile_sha256": "e1fbb26ec07f26320aa8fcf3b05a437fd6e07fa03b6d4d0195d8956764c7c748",
            "checked_at_utc": "2026-09-09T06:40:54.631998+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 3,
            "item_min_support": 12,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 96749,
            "items": 12713,
            "pairs": 252131,
            "train_users": 45182,
            "train_items": 8849,
            "train_observed_items": 8849,
            "val_users": 42979,
            "val_target_pairs": 76144,
            "test_users": 29693,
            "test_target_pairs": 57528,
            "val_target_items": 9307,
            "val_cold_target_items": 2034,
            "val_cold_target_item_fraction": 0.21854518104652412,
            "val_catalog_items": 10966,
            "test_target_items": 9221,
            "test_cold_target_items": 3471,
            "test_cold_target_item_fraction": 0.3764233814119944,
            "test_catalog_items": 12713
          },
          "warnings": [
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "8cb33911024927429289d9ed1d8e7ddd609002dafe136ae224b977257f67fbad",
            "profile_sha256": "e1fbb26ec07f26320aa8fcf3b05a437fd6e07fa03b6d4d0195d8956764c7c748",
            "checked_at_utc": "2026-09-09T06:41:02.907445+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "8cb33911024927429289d9ed1d8e7ddd609002dafe136ae224b977257f67fbad",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Arts_Crafts_and_Sewing.csv",
            "sha256": "2c83c878bb720d0851b9520e456a3884ca04684f7577cbde05cd3d4d310d7d8d"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Arts_Crafts_and_Sewing/full-00000-of-00004.parquet",
            "sha256": "db1b95d515a9b8f7a4bc4365b6bcc090e0f13ddd54b94d68366cf58c2ab902a9"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Arts_Crafts_and_Sewing/full-00001-of-00004.parquet",
            "sha256": "4c0444ab00fc93eebc5e369556e18a9795305aef04f20a6ba3cafd730c10d013"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Arts_Crafts_and_Sewing/full-00002-of-00004.parquet",
            "sha256": "fadd08153ac09209e83590407e9fe024a2e1962fb73fb848e697b2b88665ea6d"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Arts_Crafts_and_Sewing/full-00003-of-00004.parquet",
            "sha256": "bc003ffdecfb3efc1b4e41fb96908370523bcdac1dc4c1862772f79484dd24a8"
          }
        ]
      }
    },
    {
      "category": "Automotive",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 7,
            "item_min_support": 25,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 5000,
            "test_users": 5000
          },
          "stats": {
            "users": 99264,
            "items": 16079,
            "pairs": 1009231,
            "train_users": 89264,
            "train_items": 16079,
            "train_observed_items": 16079,
            "val_users": 5000,
            "val_target_pairs": 13417,
            "test_users": 5000,
            "test_target_pairs": 13635,
            "preprocessed_users": 99264,
            "preprocessed_items": 16079,
            "preprocessed_pairs": 1123501,
            "val_target_items": 7492,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 16079,
            "test_target_items": 7574,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 16079
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "c1e2ddc59f9d4cb00542552b84680e18658c6144b8ce02ac38cc491c002a6d12",
            "profile_sha256": "4dc1f8a7663ab33344a34140c91842e5cea2ca7e0395d0d98432dcf99c30f699",
            "checked_at_utc": "2026-09-09T06:41:06.969681+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 7,
            "item_min_support": 25,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 99264,
            "items": 16079,
            "pairs": 948329,
            "train_users": 99264,
            "train_items": 16079,
            "train_observed_items": 13667,
            "val_users": 42440,
            "val_target_pairs": 57881,
            "test_users": 66549,
            "test_target_pairs": 117291,
            "preprocessed_users": 99264,
            "preprocessed_items": 16079,
            "preprocessed_pairs": 1123501,
            "val_target_items": 804,
            "val_cold_target_items": 804,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 16079,
            "test_target_items": 1608,
            "test_cold_target_items": 1608,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 16079
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "c1e2ddc59f9d4cb00542552b84680e18658c6144b8ce02ac38cc491c002a6d12",
            "profile_sha256": "4dc1f8a7663ab33344a34140c91842e5cea2ca7e0395d0d98432dcf99c30f699",
            "checked_at_utc": "2026-09-09T06:41:16.967739+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 7,
            "item_min_support": 25,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 99264,
            "items": 16079,
            "pairs": 924973,
            "train_users": 99264,
            "train_items": 16079,
            "train_observed_items": 16079,
            "val_users": 99264,
            "val_target_pairs": 99264,
            "test_users": 99264,
            "test_target_pairs": 99264,
            "preprocessed_users": 99264,
            "preprocessed_items": 16079,
            "preprocessed_pairs": 1123501,
            "val_target_items": 15101,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 16079,
            "test_target_items": 14639,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 16079
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "c1e2ddc59f9d4cb00542552b84680e18658c6144b8ce02ac38cc491c002a6d12",
            "profile_sha256": "4dc1f8a7663ab33344a34140c91842e5cea2ca7e0395d0d98432dcf99c30f699",
            "checked_at_utc": "2026-09-09T06:41:23.685713+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 6,
            "item_min_support": 12,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 86556,
            "items": 19182,
            "pairs": 428612,
            "train_users": 40163,
            "train_items": 13869,
            "train_observed_items": 13869,
            "val_users": 49082,
            "val_target_pairs": 114275,
            "test_users": 30194,
            "test_target_pairs": 62986,
            "val_target_items": 15181,
            "val_cold_target_items": 3939,
            "val_cold_target_item_fraction": 0.25946907318358475,
            "val_catalog_items": 18280,
            "test_target_items": 12891,
            "test_cold_target_items": 3830,
            "test_cold_target_item_fraction": 0.29710650841672487,
            "test_catalog_items": 19182
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "c1e2ddc59f9d4cb00542552b84680e18658c6144b8ce02ac38cc491c002a6d12",
            "profile_sha256": "4dc1f8a7663ab33344a34140c91842e5cea2ca7e0395d0d98432dcf99c30f699",
            "checked_at_utc": "2026-09-09T06:41:52.912547+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "c1e2ddc59f9d4cb00542552b84680e18658c6144b8ce02ac38cc491c002a6d12",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Automotive.csv",
            "sha256": "6421799eb234b850737259f5e582db1240218d3dbf360631cc768c8ef19c667f"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw/meta_categories/meta_Automotive.jsonl",
            "sha256": "8399c5ab84b2a5239e105974a33fb5d1d6d5e1e643291713008c096240ef6941"
          }
        ]
      }
    },
    {
      "category": "Baby_Products",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 6,
            "item_min_support": 9,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 5000,
            "test_users": 5000
          },
          "stats": {
            "users": 85240,
            "items": 17987,
            "pairs": 719963,
            "train_users": 75240,
            "train_items": 17987,
            "train_observed_items": 17987,
            "val_users": 5000,
            "val_target_pairs": 12277,
            "test_users": 5000,
            "test_target_pairs": 12169,
            "preprocessed_users": 85240,
            "preprocessed_items": 17987,
            "preprocessed_pairs": 815502,
            "val_target_items": 6029,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 17987,
            "test_target_items": 6056,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 17987
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "b52d7a6590c43a1ead0cce59a7db932248725b3329db3a21a3314614a369008f",
            "profile_sha256": "e3bb5338638b9c9841db7be126cc6e6c1358a780eb56ba9d50ca613e0f8f4a9f",
            "checked_at_utc": "2026-09-09T06:41:06.739241+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 6,
            "item_min_support": 9,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 85240,
            "items": 17987,
            "pairs": 697358,
            "train_users": 85240,
            "train_items": 17987,
            "train_observed_items": 15288,
            "val_users": 29585,
            "val_target_pairs": 38018,
            "test_users": 49964,
            "test_target_pairs": 80126,
            "preprocessed_users": 85240,
            "preprocessed_items": 17987,
            "preprocessed_pairs": 815502,
            "val_target_items": 900,
            "val_cold_target_items": 900,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 17987,
            "test_target_items": 1799,
            "test_cold_target_items": 1799,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 17987
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "b52d7a6590c43a1ead0cce59a7db932248725b3329db3a21a3314614a369008f",
            "profile_sha256": "e3bb5338638b9c9841db7be126cc6e6c1358a780eb56ba9d50ca613e0f8f4a9f",
            "checked_at_utc": "2026-09-09T06:41:14.649151+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 6,
            "item_min_support": 9,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 85240,
            "items": 17987,
            "pairs": 645022,
            "train_users": 85240,
            "train_items": 17987,
            "train_observed_items": 17983,
            "val_users": 85240,
            "val_target_pairs": 85240,
            "test_users": 85240,
            "test_target_pairs": 85240,
            "preprocessed_users": 85240,
            "preprocessed_items": 17987,
            "preprocessed_pairs": 815502,
            "val_target_items": 14115,
            "val_cold_target_items": 4,
            "val_cold_target_item_fraction": 0.00028338646829613885,
            "val_catalog_items": 17987,
            "test_target_items": 13560,
            "test_cold_target_items": 4,
            "test_cold_target_item_fraction": 0.0002949852507374631,
            "test_catalog_items": 17987
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "b52d7a6590c43a1ead0cce59a7db932248725b3329db3a21a3314614a369008f",
            "profile_sha256": "e3bb5338638b9c9841db7be126cc6e6c1358a780eb56ba9d50ca613e0f8f4a9f",
            "checked_at_utc": "2026-09-09T06:41:20.147893+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 3,
            "item_min_support": 7,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 95735,
            "items": 13365,
            "pairs": 263221,
            "train_users": 46851,
            "train_items": 9096,
            "train_observed_items": 9096,
            "val_users": 38591,
            "val_target_pairs": 68708,
            "test_users": 25313,
            "test_target_pairs": 56837,
            "val_target_items": 7822,
            "val_cold_target_items": 1721,
            "val_cold_target_item_fraction": 0.2200204551265661,
            "val_catalog_items": 10946,
            "test_target_items": 8198,
            "test_cold_target_items": 3558,
            "test_cold_target_item_fraction": 0.43400829470602587,
            "test_catalog_items": 13365
          },
          "warnings": [
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "b52d7a6590c43a1ead0cce59a7db932248725b3329db3a21a3314614a369008f",
            "profile_sha256": "e3bb5338638b9c9841db7be126cc6e6c1358a780eb56ba9d50ca613e0f8f4a9f",
            "checked_at_utc": "2026-09-09T06:41:24.311201+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "b52d7a6590c43a1ead0cce59a7db932248725b3329db3a21a3314614a369008f",
        "sources": [
          {
            "url": "https://mcauleylab.ucsd.edu/public_datasets/data/amazon_2023/benchmark/0core/rating_only/Baby_Products.csv.gz",
            "sha256": "e2a8d0498afed767ee2615db7fac549559d82490b1a73c7241b84b5e9e8c279e"
          },
          {
            "url": "https://mcauleylab.ucsd.edu/public_datasets/data/amazon_2023/raw/meta_categories/meta_Baby_Products.jsonl.gz",
            "sha256": "10de386966a66a3588ccc85046ec7e608d441fc15a2184add9a01cd947c74b9f"
          }
        ]
      }
    },
    {
      "category": "Beauty_and_Personal_Care",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 8,
            "item_min_support": 25,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 5000,
            "test_users": 5000
          },
          "stats": {
            "users": 95840,
            "items": 16817,
            "pairs": 1100549,
            "train_users": 85840,
            "train_items": 16817,
            "train_observed_items": 16817,
            "val_users": 5000,
            "val_target_pairs": 14824,
            "test_users": 5000,
            "test_target_pairs": 14901,
            "preprocessed_users": 95840,
            "preprocessed_items": 16817,
            "preprocessed_pairs": 1231211,
            "val_target_items": 7981,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 16817,
            "test_target_items": 8008,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 16817
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "cc73af2011f87018046c27a9c2691ce305397e46905466f87c4740caab176057",
            "profile_sha256": "2df40fe736585ecfd34791ab25c0465e0a962bbcb327c743eabf67da1566241e",
            "checked_at_utc": "2026-09-09T06:41:37.939437+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 8,
            "item_min_support": 25,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 95840,
            "items": 16817,
            "pairs": 1042505,
            "train_users": 95840,
            "train_items": 16817,
            "train_observed_items": 14294,
            "val_users": 44765,
            "val_target_pairs": 64848,
            "test_users": 66388,
            "test_target_pairs": 123858,
            "preprocessed_users": 95840,
            "preprocessed_items": 16817,
            "preprocessed_pairs": 1231211,
            "val_target_items": 841,
            "val_cold_target_items": 841,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 16817,
            "test_target_items": 1682,
            "test_cold_target_items": 1682,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 16817
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "cc73af2011f87018046c27a9c2691ce305397e46905466f87c4740caab176057",
            "profile_sha256": "2df40fe736585ecfd34791ab25c0465e0a962bbcb327c743eabf67da1566241e",
            "checked_at_utc": "2026-09-09T06:41:47.939500+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 8,
            "item_min_support": 25,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 95840,
            "items": 16817,
            "pairs": 1039531,
            "train_users": 95840,
            "train_items": 16817,
            "train_observed_items": 16817,
            "val_users": 95840,
            "val_target_pairs": 95840,
            "test_users": 95840,
            "test_target_pairs": 95840,
            "preprocessed_users": 95840,
            "preprocessed_items": 16817,
            "preprocessed_pairs": 1231211,
            "val_target_items": 15180,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 16817,
            "test_target_items": 14750,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 16817
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "cc73af2011f87018046c27a9c2691ce305397e46905466f87c4740caab176057",
            "profile_sha256": "2df40fe736585ecfd34791ab25c0465e0a962bbcb327c743eabf67da1566241e",
            "checked_at_utc": "2026-09-09T06:41:54.551351+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 6,
            "item_min_support": 18,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 95044,
            "items": 14656,
            "pairs": 392445,
            "train_users": 38141,
            "train_items": 8247,
            "train_observed_items": 8247,
            "val_users": 50440,
            "val_target_pairs": 130033,
            "test_users": 40215,
            "test_target_pairs": 130731,
            "val_target_items": 9685,
            "val_cold_target_items": 2799,
            "val_cold_target_item_fraction": 0.2890036138358286,
            "val_catalog_items": 11288,
            "test_target_items": 11789,
            "test_cold_target_items": 5747,
            "test_cold_target_item_fraction": 0.48748833658495205,
            "test_catalog_items": 14656
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "cc73af2011f87018046c27a9c2691ce305397e46905466f87c4740caab176057",
            "profile_sha256": "2df40fe736585ecfd34791ab25c0465e0a962bbcb327c743eabf67da1566241e",
            "checked_at_utc": "2026-09-09T06:42:21.503642+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "cc73af2011f87018046c27a9c2691ce305397e46905466f87c4740caab176057",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Beauty_and_Personal_Care.csv",
            "sha256": "21ddbc18da2aa7396245752850066e79845843ed2e07b90801fc90923fe39909"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw/meta_categories/meta_Beauty_and_Personal_Care.jsonl",
            "sha256": "c8a69eba6579f1a3a2b6d6d564846f3c59839d0c859ff180a63a97a245c3bec2"
          }
        ]
      }
    },
    {
      "category": "Books",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 5,
            "item_min_support": 17,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 20000,
            "test_users": 20000
          },
          "stats": {
            "users": 428352,
            "items": 94864,
            "pairs": 4457061,
            "train_users": 388352,
            "train_items": 94864,
            "train_observed_items": 94864,
            "val_users": 20000,
            "val_target_pairs": 52437,
            "test_users": 20000,
            "test_target_pairs": 53212,
            "preprocessed_users": 428352,
            "preprocessed_items": 94864,
            "preprocessed_pairs": 4911675,
            "val_target_items": 31567,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 94864,
            "test_target_items": 32453,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 94864
          },
          "warnings": [],
          "verification": {
            "kind": "user-holdout-refinement",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "checked_at_utc": "2026-09-09T06:38:03.767582+00:00",
            "baseline": {
              "parameters": {
                "min_user_support": 5,
                "item_min_support": 17,
                "seed": 42,
                "min_entity_text_words": 0,
                "set_all_values_to": 1,
                "temporal_period_hours": 8136,
                "val_users": 5000,
                "test_users": 5000
              },
              "stats": {
                "users": 428352,
                "items": 94864,
                "pairs": 4798929,
                "train_users": 418352,
                "train_items": 94864,
                "train_observed_items": 94864,
                "val_users": 5000,
                "val_target_pairs": 13420,
                "test_users": 5000,
                "test_target_pairs": 12819,
                "preprocessed_users": 428352,
                "preprocessed_items": 94864,
                "preprocessed_pairs": 4911675
              }
            },
            "trials": [
              {
                "requested_each": 20000,
                "stats": {
                  "users": 428352,
                  "items": 94864,
                  "pairs": 4457061,
                  "train_users": 388352,
                  "train_items": 94864,
                  "train_observed_items": 94864,
                  "val_users": 20000,
                  "val_target_pairs": 52437,
                  "test_users": 20000,
                  "test_target_pairs": 53212,
                  "preprocessed_users": 428352,
                  "preprocessed_items": 94864,
                  "preprocessed_pairs": 4911675,
                  "val_target_items": 31567,
                  "val_cold_target_items": 0,
                  "val_cold_target_item_fraction": 0,
                  "val_catalog_items": 94864,
                  "test_target_items": 32453,
                  "test_cold_target_items": 0,
                  "test_cold_target_item_fraction": 0,
                  "test_catalog_items": 94864
                }
              }
            ],
            "rationale": "User requested 20,000 validation and test users each for Books and Electronics; support thresholds and preprocessed graph unchanged."
          },
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "a7ae1dad96b19428a490f831b39a70b23bca3fd354ed50be54240f7f28da0db5",
            "profile_sha256": "ea2e4bae3a87288cb13b106a05e6352251667ed6966b274a684f2453582d7c43",
            "checked_at_utc": "2026-09-09T06:38:03.767582+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 5,
            "item_min_support": 17,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 428341,
            "items": 94864,
            "pairs": 4194262,
            "train_users": 428341,
            "train_items": 94864,
            "train_observed_items": 80633,
            "val_users": 161770,
            "val_target_pairs": 248531,
            "test_users": 241076,
            "test_target_pairs": 468824,
            "preprocessed_users": 428352,
            "preprocessed_items": 94864,
            "preprocessed_pairs": 4911675,
            "val_target_items": 4744,
            "val_cold_target_items": 4744,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 94864,
            "test_target_items": 9487,
            "test_cold_target_items": 9487,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 94864
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "a7ae1dad96b19428a490f831b39a70b23bca3fd354ed50be54240f7f28da0db5",
            "profile_sha256": "ea2e4bae3a87288cb13b106a05e6352251667ed6966b274a684f2453582d7c43",
            "checked_at_utc": "2026-09-09T06:38:52.811397+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 5,
            "item_min_support": 17,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 428352,
            "items": 94864,
            "pairs": 4054971,
            "train_users": 428352,
            "train_items": 94864,
            "train_observed_items": 94829,
            "val_users": 428352,
            "val_target_pairs": 428352,
            "test_users": 428352,
            "test_target_pairs": 428352,
            "preprocessed_users": 428352,
            "preprocessed_items": 94864,
            "preprocessed_pairs": 4911675,
            "val_target_items": 80327,
            "val_cold_target_items": 31,
            "val_cold_target_item_fraction": 0.00038592254161116436,
            "val_catalog_items": 94864,
            "test_target_items": 76778,
            "test_cold_target_items": 35,
            "test_cold_target_item_fraction": 0.0004558597514913126,
            "test_catalog_items": 94864
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "a7ae1dad96b19428a490f831b39a70b23bca3fd354ed50be54240f7f28da0db5",
            "profile_sha256": "ea2e4bae3a87288cb13b106a05e6352251667ed6966b274a684f2453582d7c43",
            "checked_at_utc": "2026-09-09T06:39:25.630398+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 6,
            "item_min_support": 6,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 112433,
            "items": 96465,
            "pairs": 1336615,
            "train_users": 67583,
            "train_items": 75631,
            "train_observed_items": 75631,
            "val_users": 63581,
            "val_target_pairs": 227322,
            "test_users": 41812,
            "test_target_pairs": 126292,
            "val_target_items": 37923,
            "val_cold_target_items": 10950,
            "val_cold_target_item_fraction": 0.28874297919468395,
            "val_catalog_items": 90463,
            "test_target_items": 26194,
            "test_cold_target_items": 10533,
            "test_cold_target_item_fraction": 0.40211498816522867,
            "test_catalog_items": 96465
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "a7ae1dad96b19428a490f831b39a70b23bca3fd354ed50be54240f7f28da0db5",
            "profile_sha256": "ea2e4bae3a87288cb13b106a05e6352251667ed6966b274a684f2453582d7c43",
            "checked_at_utc": "2026-09-09T06:40:17.355928+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "a7ae1dad96b19428a490f831b39a70b23bca3fd354ed50be54240f7f28da0db5",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Books.csv",
            "sha256": "068388cec9a5ee1b56e6858dad021d1e2154dedbbda65b5db30c634eccc874ba"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw/meta_categories/meta_Books.jsonl",
            "sha256": "3b008960580e390874b6723d438a3df3558bc98b9547ed37c90dc1659109cec7"
          }
        ]
      }
    },
    {
      "category": "CDs_and_Vinyl",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 5,
            "item_min_support": 16,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 5000,
            "test_users": 5000
          },
          "stats": {
            "users": 66625,
            "items": 18586,
            "pairs": 658391,
            "train_users": 56625,
            "train_items": 18586,
            "train_observed_items": 18586,
            "val_users": 5000,
            "val_target_pairs": 13333,
            "test_users": 5000,
            "test_target_pairs": 14014,
            "preprocessed_users": 66625,
            "preprocessed_items": 18586,
            "preprocessed_pairs": 776574,
            "val_target_items": 8295,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 18586,
            "test_target_items": 8493,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 18586
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "50ca33c026961bf8fe65661c3365c3fb230697f8e4f66c988d968146e1182897",
            "profile_sha256": "5fc83128ad816fc5a1e38d74df508c00353c98734f210ec8b1f0118dfe8c9d72",
            "checked_at_utc": "2026-09-09T06:41:57.344166+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 5,
            "item_min_support": 16,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 66622,
            "items": 18586,
            "pairs": 662593,
            "train_users": 66622,
            "train_items": 18586,
            "train_observed_items": 15797,
            "val_users": 24546,
            "val_target_pairs": 37442,
            "test_users": 38473,
            "test_target_pairs": 76524,
            "preprocessed_users": 66625,
            "preprocessed_items": 18586,
            "preprocessed_pairs": 776574,
            "val_target_items": 930,
            "val_cold_target_items": 930,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 18586,
            "test_target_items": 1859,
            "test_cold_target_items": 1859,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 18586
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "50ca33c026961bf8fe65661c3365c3fb230697f8e4f66c988d968146e1182897",
            "profile_sha256": "5fc83128ad816fc5a1e38d74df508c00353c98734f210ec8b1f0118dfe8c9d72",
            "checked_at_utc": "2026-09-09T06:42:03.633010+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 5,
            "item_min_support": 16,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 66625,
            "items": 18586,
            "pairs": 643324,
            "train_users": 66625,
            "train_items": 18586,
            "train_observed_items": 18584,
            "val_users": 66625,
            "val_target_pairs": 66625,
            "test_users": 66625,
            "test_target_pairs": 66625,
            "preprocessed_users": 66625,
            "preprocessed_items": 18586,
            "preprocessed_pairs": 776574,
            "val_target_items": 16271,
            "val_cold_target_items": 1,
            "val_cold_target_item_fraction": 0.00006145903755147194,
            "val_catalog_items": 18586,
            "test_target_items": 16039,
            "test_cold_target_items": 2,
            "test_cold_target_item_fraction": 0.00012469605336991085,
            "test_catalog_items": 18586
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "50ca33c026961bf8fe65661c3365c3fb230697f8e4f66c988d968146e1182897",
            "profile_sha256": "5fc83128ad816fc5a1e38d74df508c00353c98734f210ec8b1f0118dfe8c9d72",
            "checked_at_utc": "2026-09-09T06:42:08.036916+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 5,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 29237,
            "items": 13650,
            "pairs": 109653,
            "train_users": 15188,
            "train_items": 11048,
            "train_observed_items": 11048,
            "val_users": 13120,
            "val_target_pairs": 22073,
            "test_users": 6481,
            "test_target_pairs": 10317,
            "val_target_items": 6986,
            "val_cold_target_items": 1586,
            "val_cold_target_item_fraction": 0.22702547953048954,
            "val_catalog_items": 13232,
            "test_target_items": 4566,
            "test_cold_target_items": 1101,
            "test_cold_target_item_fraction": 0.24113009198423127,
            "test_catalog_items": 13650
          },
          "warnings": [
            "Below the preferred size range; support filtering cannot add data",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "50ca33c026961bf8fe65661c3365c3fb230697f8e4f66c988d968146e1182897",
            "profile_sha256": "5fc83128ad816fc5a1e38d74df508c00353c98734f210ec8b1f0118dfe8c9d72",
            "checked_at_utc": "2026-09-09T06:42:12.372228+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "50ca33c026961bf8fe65661c3365c3fb230697f8e4f66c988d968146e1182897",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/CDs_and_Vinyl.csv",
            "sha256": "26b17d5371b44c0afe4d0795f4dc0cc63f5f80f49dc931b0a59f18ee0f10e4d1"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw/meta_categories/meta_CDs_and_Vinyl.jsonl",
            "sha256": "c52275a5bce63bf293f987bff5ff1f2b268982797545f3df2b7662ab638e8aec"
          }
        ]
      }
    },
    {
      "category": "Cell_Phones_and_Accessories",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 6,
            "item_min_support": 13,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 5000,
            "test_users": 5000
          },
          "stats": {
            "users": 92781,
            "items": 19322,
            "pairs": 676209,
            "train_users": 82781,
            "train_items": 19322,
            "train_observed_items": 19322,
            "val_users": 5000,
            "val_target_pairs": 11171,
            "test_users": 5000,
            "test_target_pairs": 11037,
            "preprocessed_users": 92781,
            "preprocessed_items": 19322,
            "preprocessed_pairs": 758524,
            "val_target_items": 6692,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 19322,
            "test_target_items": 6736,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 19322
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "b8b7ad402b0d627e02928417e3673eb8510f17cf0944ebf8ad957bbf417aa2e6",
            "profile_sha256": "fb3003e19d43be917feb8c04f59318589882793f4360929cacf643826dd8e1f9",
            "checked_at_utc": "2026-09-09T06:42:24.100832+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 6,
            "item_min_support": 13,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 92781,
            "items": 19322,
            "pairs": 646767,
            "train_users": 92781,
            "train_items": 19322,
            "train_observed_items": 16422,
            "val_users": 28616,
            "val_target_pairs": 34599,
            "test_users": 52067,
            "test_target_pairs": 77158,
            "preprocessed_users": 92781,
            "preprocessed_items": 19322,
            "preprocessed_pairs": 758524,
            "val_target_items": 967,
            "val_cold_target_items": 967,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 19322,
            "test_target_items": 1933,
            "test_cold_target_items": 1933,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 19322
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "b8b7ad402b0d627e02928417e3673eb8510f17cf0944ebf8ad957bbf417aa2e6",
            "profile_sha256": "fb3003e19d43be917feb8c04f59318589882793f4360929cacf643826dd8e1f9",
            "checked_at_utc": "2026-09-09T06:42:32.487047+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 6,
            "item_min_support": 13,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 92781,
            "items": 19322,
            "pairs": 572962,
            "train_users": 92781,
            "train_items": 19322,
            "train_observed_items": 19315,
            "val_users": 92781,
            "val_target_pairs": 92781,
            "test_users": 92781,
            "test_target_pairs": 92781,
            "preprocessed_users": 92781,
            "preprocessed_items": 19322,
            "preprocessed_pairs": 758524,
            "val_target_items": 16504,
            "val_cold_target_items": 7,
            "val_cold_target_item_fraction": 0.0004241396025206011,
            "val_catalog_items": 19322,
            "test_target_items": 15069,
            "test_cold_target_items": 7,
            "test_cold_target_item_fraction": 0.0004645298294511912,
            "test_catalog_items": 19322
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "b8b7ad402b0d627e02928417e3673eb8510f17cf0944ebf8ad957bbf417aa2e6",
            "profile_sha256": "fb3003e19d43be917feb8c04f59318589882793f4360929cacf643826dd8e1f9",
            "checked_at_utc": "2026-09-09T06:42:38.398661+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 5,
            "item_min_support": 8,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 89713,
            "items": 19096,
            "pairs": 232405,
            "train_users": 33819,
            "train_items": 10107,
            "train_observed_items": 10107,
            "val_users": 41928,
            "val_target_pairs": 77599,
            "test_users": 35885,
            "test_target_pairs": 94628,
            "val_target_items": 7932,
            "val_cold_target_items": 3083,
            "val_cold_target_item_fraction": 0.38867876954109937,
            "val_catalog_items": 14303,
            "test_target_items": 10338,
            "test_cold_target_items": 6923,
            "test_cold_target_item_fraction": 0.6696653124395434,
            "test_catalog_items": 19096
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "b8b7ad402b0d627e02928417e3673eb8510f17cf0944ebf8ad957bbf417aa2e6",
            "profile_sha256": "fb3003e19d43be917feb8c04f59318589882793f4360929cacf643826dd8e1f9",
            "checked_at_utc": "2026-09-09T06:43:03.813323+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "b8b7ad402b0d627e02928417e3673eb8510f17cf0944ebf8ad957bbf417aa2e6",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Cell_Phones_and_Accessories.csv",
            "sha256": "82efde9180263e3ec437993b913065dbce0de87a38ad794dfd7dd7e5b69985f7"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Cell_Phones_and_Accessories/full-00000-of-00007.parquet",
            "sha256": "cddd78045c58ed09f89920d4c067a509ece33e62114b33f3638d5896d8bff7d7"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Cell_Phones_and_Accessories/full-00001-of-00007.parquet",
            "sha256": "a1b7043ba09f34fc081818809eb40bb24730107576cf9a32eb358ff8585d132e"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Cell_Phones_and_Accessories/full-00002-of-00007.parquet",
            "sha256": "429c9ccfbc71b896784a6cb2867a42f5e19472e9dc74086539bd12d56cad54d0"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Cell_Phones_and_Accessories/full-00003-of-00007.parquet",
            "sha256": "543632919b2d4063589ef06353d657c75129e831b837231081e39da39a319d0f"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Cell_Phones_and_Accessories/full-00004-of-00007.parquet",
            "sha256": "5464a480cb241a71ea9dcbbb2969017af4e2d632538005ad2561b1a476eb9b4f"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Cell_Phones_and_Accessories/full-00005-of-00007.parquet",
            "sha256": "b25ce73611ee04b8627527ae705e9b9692c685328e43612a0a97350115c1ec6a"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Cell_Phones_and_Accessories/full-00006-of-00007.parquet",
            "sha256": "70aa3043745515447be2298588415026b12119014f22ca205e0df3e828bc2c81"
          }
        ]
      }
    },
    {
      "category": "Clothing_Shoes_and_Jewelry",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 10,
            "item_min_support": 35,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 5000,
            "test_users": 5000
          },
          "stats": {
            "users": 93809,
            "items": 14289,
            "pairs": 1176756,
            "train_users": 83809,
            "train_items": 14289,
            "train_observed_items": 14289,
            "val_users": 5000,
            "val_target_pairs": 15947,
            "test_users": 5000,
            "test_target_pairs": 15996,
            "preprocessed_users": 93809,
            "preprocessed_items": 14289,
            "preprocessed_pairs": 1317380,
            "val_target_items": 8145,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 14289,
            "test_target_items": 8166,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 14289
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "dae2499544071c4004d82e6466fbbc4b9925b5ea8c33ebc96ada098e21e4aca8"
            },
            "prepared_sha256": "412ad96e768ea8e2d22ca800c765117741a07e2fe46b954fd7499862c20dd1de",
            "profile_sha256": "d3f5d824bd7636ed7747546db67bbf0a17d3e61cdd98b95d3bd518752849add8",
            "checked_at_utc": "2026-09-09T07:15:25.850565+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 10,
            "item_min_support": 35,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 93809,
            "items": 14289,
            "pairs": 1118190,
            "train_users": 93809,
            "train_items": 14289,
            "train_observed_items": 12145,
            "val_users": 46057,
            "val_target_pairs": 64778,
            "test_users": 70344,
            "test_target_pairs": 134412,
            "preprocessed_users": 93809,
            "preprocessed_items": 14289,
            "preprocessed_pairs": 1317380,
            "val_target_items": 715,
            "val_cold_target_items": 715,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 14289,
            "test_target_items": 1429,
            "test_cold_target_items": 1429,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 14289
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "dae2499544071c4004d82e6466fbbc4b9925b5ea8c33ebc96ada098e21e4aca8"
            },
            "prepared_sha256": "412ad96e768ea8e2d22ca800c765117741a07e2fe46b954fd7499862c20dd1de",
            "profile_sha256": "d3f5d824bd7636ed7747546db67bbf0a17d3e61cdd98b95d3bd518752849add8",
            "checked_at_utc": "2026-09-09T07:15:36.380468+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 10,
            "item_min_support": 35,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 93809,
            "items": 14289,
            "pairs": 1129762,
            "train_users": 93809,
            "train_items": 14289,
            "train_observed_items": 14289,
            "val_users": 93809,
            "val_target_pairs": 93809,
            "test_users": 93809,
            "test_target_pairs": 93809,
            "preprocessed_users": 93809,
            "preprocessed_items": 14289,
            "preprocessed_pairs": 1317380,
            "val_target_items": 13220,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 14289,
            "test_target_items": 12877,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 14289
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "dae2499544071c4004d82e6466fbbc4b9925b5ea8c33ebc96ada098e21e4aca8"
            },
            "prepared_sha256": "412ad96e768ea8e2d22ca800c765117741a07e2fe46b954fd7499862c20dd1de",
            "profile_sha256": "d3f5d824bd7636ed7747546db67bbf0a17d3e61cdd98b95d3bd518752849add8",
            "checked_at_utc": "2026-09-09T07:15:43.241901+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 10,
            "item_min_support": 17,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 113384,
            "items": 24824,
            "pairs": 428731,
            "train_users": 29993,
            "train_items": 10351,
            "train_observed_items": 10351,
            "val_users": 76251,
            "val_target_pairs": 257775,
            "test_users": 59629,
            "test_target_pairs": 153838,
            "val_target_items": 20663,
            "val_cold_target_items": 11332,
            "val_cold_target_item_fraction": 0.5484198809466195,
            "val_catalog_items": 23132,
            "test_target_items": 19421,
            "test_cold_target_items": 11128,
            "test_cold_target_item_fraction": 0.572988002677514,
            "test_catalog_items": 24824
          },
          "warnings": [],
          "size_limits": {
            "max_users": 120000,
            "max_items": 25000
          },
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "5584b6c4a6a0b9e36983bfe52073020fcd7ca7853dca6ad3da31cecfe63bb28f"
            },
            "prepared_sha256": "412ad96e768ea8e2d22ca800c765117741a07e2fe46b954fd7499862c20dd1de",
            "profile_sha256": "0411196115a789da929e66710dac7dc566a82927bef0b53a32bd219f763ce358",
            "checked_at_utc": "2026-09-09T12:44:48.015996+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          },
          "verification": {
            "kind": "temporal-size-exception-refinement",
            "rationale": "User approved Clothing temporal 10/17 with a 120000-user/25000-item exception; other splits remain within ordinary caps. Support filtering only; all ratings retained.",
            "screening": {
              "min_user_support": 10,
              "item_min_support": 17,
              "users": 113384,
              "items": 24824,
              "pairs": 428731,
              "phases": [
                {
                  "users": 29993,
                  "items": 10351,
                  "pairs": 428731
                },
                {
                  "users": 76251,
                  "items": 23132,
                  "pairs": 1131858
                },
                {
                  "users": 59629,
                  "items": 24824,
                  "pairs": 924442
                }
              ]
            },
            "baseline": {
              "status": "verified",
              "parameters": {
                "min_user_support": 2,
                "item_min_support": 279,
                "seed": 42,
                "min_entity_text_words": 0,
                "set_all_values_to": 1,
                "temporal_period_hours": 8136
              },
              "stats": {
                "users": 81003,
                "items": 264,
                "pairs": 2144,
                "train_users": 1050,
                "train_items": 4,
                "train_observed_items": 4,
                "val_users": 51036,
                "val_target_pairs": 57671,
                "test_users": 32384,
                "test_target_pairs": 35574
              },
              "warnings": [
                "Below the preferred size range; support filtering cannot add data",
                "Short-history fallback"
              ]
            },
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "5584b6c4a6a0b9e36983bfe52073020fcd7ca7853dca6ad3da31cecfe63bb28f"
            },
            "checked_at_utc": "2026-09-09T12:44:48.015996+00:00",
            "previous_within_cap_candidate": {
              "parameters": {
                "min_user_support": 19,
                "item_min_support": 8,
                "seed": 42,
                "min_entity_text_words": 0,
                "set_all_values_to": 1,
                "temporal_period_hours": 8136
              },
              "stats": {
                "users": 3879,
                "items": 16779,
                "pairs": 47566,
                "train_users": 961,
                "train_items": 3852,
                "train_observed_items": 3852,
                "val_users": 636,
                "val_target_pairs": 2645,
                "test_users": 3515,
                "test_target_pairs": 77852,
                "val_target_items": 607,
                "val_cold_target_items": 285,
                "val_cold_target_item_fraction": 0.4695222405271829,
                "val_catalog_items": 4165,
                "test_target_items": 11076,
                "test_cold_target_items": 10819,
                "test_cold_target_item_fraction": 0.9767966775009028,
                "test_catalog_items": 16779
              },
              "warnings": [
                "Fewer than 1,000 eligible users in validation or test",
                "Below the preferred size range; support filtering cannot add data",
                "More items than users"
              ]
            }
          }
        }
      },
      "input": {
        "prepared_sha256": "412ad96e768ea8e2d22ca800c765117741a07e2fe46b954fd7499862c20dd1de",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Clothing_Shoes_and_Jewelry.csv",
            "sha256": "d1879461a43508f08dd01fa56715f68e0d834fd9f0d6a016b8fe2b26445fcb74"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw/meta_categories/meta_Clothing_Shoes_and_Jewelry.jsonl",
            "sha256": "e5ff908573938ee114e4f4dfcfc46799b0ead24a57a8c075fbca2e6e28d78382"
          }
        ]
      }
    },
    {
      "category": "Digital_Music",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 2,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 278,
            "test_users": 278
          },
          "stats": {
            "users": 2724,
            "items": 2341,
            "pairs": 5996,
            "train_users": 2226,
            "train_items": 2341,
            "train_observed_items": 2341,
            "val_users": 254,
            "val_target_pairs": 267,
            "test_users": 244,
            "test_target_pairs": 259,
            "preprocessed_users": 2782,
            "preprocessed_items": 2389,
            "preprocessed_pairs": 7441,
            "val_target_items": 252,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 2341,
            "test_target_items": 240,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 2341
          },
          "warnings": [
            "Fewer than 1,000 eligible users in validation or test",
            "Below the preferred size range; support filtering cannot add data",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "a406577cce170163c1e9f000ab9df705a0a33ea8da187a9b740a4c3322be7f51",
            "profile_sha256": "c4067af8997e7b7820de353335beb84bc8fe3f9c0f4f4218b948c81fc40d7fb9",
            "checked_at_utc": "2026-09-09T06:42:21.964832+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 2,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 2737,
            "items": 2389,
            "pairs": 6392,
            "train_users": 2737,
            "train_items": 2389,
            "train_observed_items": 2030,
            "val_users": 314,
            "val_target_pairs": 323,
            "test_users": 563,
            "test_target_pairs": 634,
            "preprocessed_users": 2782,
            "preprocessed_items": 2389,
            "preprocessed_pairs": 7441,
            "val_target_items": 119,
            "val_cold_target_items": 119,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 2389,
            "test_target_items": 236,
            "test_cold_target_items": 236,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 2389
          },
          "warnings": [
            "Fewer than 1,000 eligible users in validation or test",
            "Below the preferred size range; support filtering cannot add data",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "a406577cce170163c1e9f000ab9df705a0a33ea8da187a9b740a4c3322be7f51",
            "profile_sha256": "c4067af8997e7b7820de353335beb84bc8fe3f9c0f4f4218b948c81fc40d7fb9",
            "checked_at_utc": "2026-09-09T06:42:22.193643+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 4,
            "item_min_support": 1,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 2243,
            "items": 16240,
            "pairs": 13823,
            "train_users": 2243,
            "train_items": 16240,
            "train_observed_items": 12553,
            "val_users": 2243,
            "val_target_pairs": 2243,
            "test_users": 2243,
            "test_target_pairs": 2243,
            "preprocessed_users": 2243,
            "preprocessed_items": 16240,
            "preprocessed_pairs": 18309,
            "val_target_items": 2184,
            "val_cold_target_items": 1861,
            "val_cold_target_item_fraction": 0.8521062271062271,
            "val_catalog_items": 16240,
            "test_target_items": 2177,
            "test_cold_target_items": 1874,
            "test_cold_target_item_fraction": 0.8608176389526871,
            "test_catalog_items": 16240
          },
          "warnings": [
            "Below the preferred size range; support filtering cannot add data",
            "More items than users",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "a406577cce170163c1e9f000ab9df705a0a33ea8da187a9b740a4c3322be7f51",
            "profile_sha256": "c4067af8997e7b7820de353335beb84bc8fe3f9c0f4f4218b948c81fc40d7fb9",
            "checked_at_utc": "2026-09-09T06:42:22.405755+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 1,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 2115,
            "items": 8154,
            "pairs": 4417,
            "train_users": 919,
            "train_items": 4145,
            "train_observed_items": 4145,
            "val_users": 862,
            "val_target_pairs": 1173,
            "test_users": 604,
            "test_target_pairs": 804,
            "val_target_items": 1121,
            "val_cold_target_items": 1037,
            "val_cold_target_item_fraction": 0.9250669045495094,
            "val_catalog_items": 6781,
            "test_target_items": 735,
            "test_cold_target_items": 688,
            "test_cold_target_item_fraction": 0.9360544217687075,
            "test_catalog_items": 8154
          },
          "warnings": [
            "Fewer than 1,000 eligible users in validation or test",
            "Below the preferred size range; support filtering cannot add data",
            "More items than users",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "a406577cce170163c1e9f000ab9df705a0a33ea8da187a9b740a4c3322be7f51",
            "profile_sha256": "c4067af8997e7b7820de353335beb84bc8fe3f9c0f4f4218b948c81fc40d7fb9",
            "checked_at_utc": "2026-09-09T06:42:22.579486+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "a406577cce170163c1e9f000ab9df705a0a33ea8da187a9b740a4c3322be7f51",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Digital_Music.csv",
            "sha256": "d9fbf7d50ef694b9297b6c3ac3fb4b7ebf75bdd37e593cc1f1af713d6fedffe9"
          },
          {
            "url": "https://mcauleylab.ucsd.edu/public_datasets/data/amazon_2023/raw/meta_categories/meta_Digital_Music.jsonl.gz",
            "sha256": "78ee3b1dc5e80dc0a20ac3221987e85b80977b17d6b61a84932f811c7ced921d"
          }
        ]
      }
    },
    {
      "category": "Electronics",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 8,
            "item_min_support": 16,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 20000,
            "test_users": 20000
          },
          "stats": {
            "users": 494089,
            "items": 92180,
            "pairs": 6276852,
            "train_users": 454089,
            "train_items": 92180,
            "train_observed_items": 92180,
            "val_users": 20000,
            "val_target_pairs": 62649,
            "test_users": 20000,
            "test_target_pairs": 63059,
            "preprocessed_users": 494089,
            "preprocessed_items": 92180,
            "preprocessed_pairs": 6832469,
            "val_target_items": 31288,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 92180,
            "test_target_items": 31489,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 92180
          },
          "warnings": [],
          "verification": {
            "kind": "user-holdout-refinement",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "checked_at_utc": "2026-09-09T06:38:08.141029+00:00",
            "baseline": {
              "parameters": {
                "min_user_support": 8,
                "item_min_support": 16,
                "seed": 42,
                "min_entity_text_words": 0,
                "set_all_values_to": 1,
                "temporal_period_hours": 8136,
                "val_users": 5000,
                "test_users": 5000
              },
              "stats": {
                "users": 494089,
                "items": 92180,
                "pairs": 6693796,
                "train_users": 484089,
                "train_items": 92180,
                "train_observed_items": 92180,
                "val_users": 5000,
                "val_target_pairs": 15566,
                "test_users": 5000,
                "test_target_pairs": 15789,
                "preprocessed_users": 494089,
                "preprocessed_items": 92180,
                "preprocessed_pairs": 6832469
              }
            },
            "trials": [
              {
                "requested_each": 20000,
                "stats": {
                  "users": 494089,
                  "items": 92180,
                  "pairs": 6276852,
                  "train_users": 454089,
                  "train_items": 92180,
                  "train_observed_items": 92180,
                  "val_users": 20000,
                  "val_target_pairs": 62649,
                  "test_users": 20000,
                  "test_target_pairs": 63059,
                  "preprocessed_users": 494089,
                  "preprocessed_items": 92180,
                  "preprocessed_pairs": 6832469,
                  "val_target_items": 31288,
                  "val_cold_target_items": 0,
                  "val_cold_target_item_fraction": 0,
                  "val_catalog_items": 92180,
                  "test_target_items": 31489,
                  "test_cold_target_items": 0,
                  "test_cold_target_item_fraction": 0,
                  "test_catalog_items": 92180
                }
              }
            ],
            "rationale": "User requested 20,000 validation and test users each for Books and Electronics; support thresholds and preprocessed graph unchanged."
          },
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "459b333a8224e2a0535ce60c82bb80664c4602491dfc83aa2350edd718ae1c61",
            "profile_sha256": "a936f32b1610ffd027b70d4bda9c552222b666a5bba98e91577be408b8a96371",
            "checked_at_utc": "2026-09-09T06:38:08.141029+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 8,
            "item_min_support": 16,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 494089,
            "items": 92180,
            "pairs": 5833634,
            "train_users": 494089,
            "train_items": 92180,
            "train_observed_items": 78353,
            "val_users": 224865,
            "val_target_pairs": 324183,
            "test_users": 347160,
            "test_target_pairs": 674652,
            "preprocessed_users": 494089,
            "preprocessed_items": 92180,
            "preprocessed_pairs": 6832469,
            "val_target_items": 4609,
            "val_cold_target_items": 4609,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 92180,
            "test_target_items": 9218,
            "test_cold_target_items": 9218,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 92180
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "459b333a8224e2a0535ce60c82bb80664c4602491dfc83aa2350edd718ae1c61",
            "profile_sha256": "a936f32b1610ffd027b70d4bda9c552222b666a5bba98e91577be408b8a96371",
            "checked_at_utc": "2026-09-09T06:39:08.827947+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 8,
            "item_min_support": 16,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 494089,
            "items": 92180,
            "pairs": 5844291,
            "train_users": 494089,
            "train_items": 92180,
            "train_observed_items": 92177,
            "val_users": 494089,
            "val_target_pairs": 494089,
            "test_users": 494089,
            "test_target_pairs": 494089,
            "preprocessed_users": 494089,
            "preprocessed_items": 92180,
            "preprocessed_pairs": 6832469,
            "val_target_items": 72119,
            "val_cold_target_items": 3,
            "val_cold_target_item_fraction": 0.0000415979145578835,
            "val_catalog_items": 92180,
            "test_target_items": 66509,
            "test_cold_target_items": 3,
            "test_cold_target_item_fraction": 0.000045106677291795095,
            "test_catalog_items": 92180
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "459b333a8224e2a0535ce60c82bb80664c4602491dfc83aa2350edd718ae1c61",
            "profile_sha256": "a936f32b1610ffd027b70d4bda9c552222b666a5bba98e91577be408b8a96371",
            "checked_at_utc": "2026-09-09T06:39:48.344097+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 6,
            "item_min_support": 12,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 484391,
            "items": 78239,
            "pairs": 2936581,
            "train_users": 254248,
            "train_items": 58356,
            "train_observed_items": 58356,
            "val_users": 252303,
            "val_target_pairs": 535898,
            "test_users": 177638,
            "test_target_pairs": 437848,
            "val_target_items": 39800,
            "val_cold_target_items": 8375,
            "val_cold_target_item_fraction": 0.21042713567839197,
            "val_catalog_items": 68674,
            "test_target_items": 40647,
            "test_cold_target_items": 16409,
            "test_cold_target_item_fraction": 0.4036952296602455,
            "test_catalog_items": 78239
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "459b333a8224e2a0535ce60c82bb80664c4602491dfc83aa2350edd718ae1c61",
            "profile_sha256": "a936f32b1610ffd027b70d4bda9c552222b666a5bba98e91577be408b8a96371",
            "checked_at_utc": "2026-09-09T06:40:52.493585+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "459b333a8224e2a0535ce60c82bb80664c4602491dfc83aa2350edd718ae1c61",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Electronics.csv",
            "sha256": "a2870fcfa23755418254a4329951f2916f068f7a078bbade67a09e85b818aa94"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Electronics/full-00000-of-00010.parquet",
            "sha256": "116fe3967889da3d2fd1f5785f46532955d7c952649aa8eebf6eb6434bb9db16"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Electronics/full-00001-of-00010.parquet",
            "sha256": "9b32782313769ddc64b8b959aa6b60be520c09ef3f4485917dec0b98ed0d7ab7"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Electronics/full-00002-of-00010.parquet",
            "sha256": "c2d3ca9f83a986a25fa66c8c66812daeb0e5ea15701fbd77bcbc2939b197f934"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Electronics/full-00003-of-00010.parquet",
            "sha256": "c61d2128abd3420c3f95ec2b55ebc13dbad6b5e5953d40fdfa485a45e21a648f"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Electronics/full-00004-of-00010.parquet",
            "sha256": "254ce8d4fb835a4e1ff62a2c8e421d3c2cb08490ba2c4b39eb17fb81368ec076"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Electronics/full-00005-of-00010.parquet",
            "sha256": "76d7a5d65a3128684a50d9b2d001134914554a4412ee94924d7ce11335fa805b"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Electronics/full-00006-of-00010.parquet",
            "sha256": "2c2d6fa3517cf377449f5ba34114b019eee6377deb7f5b9870bf0576e36199bb"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Electronics/full-00007-of-00010.parquet",
            "sha256": "c6b97eaaa3579712b961063ed4de16042ea3d49654b9e448947f8a406487eba9"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Electronics/full-00008-of-00010.parquet",
            "sha256": "2d71b84f1ab378b432213c29cc460d134bb0d0f35bc72540b9b8a0611e2ebf28"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Electronics/full-00009-of-00010.parquet",
            "sha256": "9676263126312281e7fda20acb09468d3bfed9cdec9515332a17db7216b0d48b"
          }
        ]
      }
    },
    {
      "category": "Gift_Cards",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 1,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 1142,
            "test_users": 1142
          },
          "stats": {
            "users": 11408,
            "items": 717,
            "pairs": 22960,
            "train_users": 9142,
            "train_items": 717,
            "train_observed_items": 717,
            "val_users": 1135,
            "val_target_pairs": 1160,
            "test_users": 1131,
            "test_target_pairs": 1165,
            "preprocessed_users": 11426,
            "preprocessed_items": 749,
            "preprocessed_pairs": 28580,
            "val_target_items": 230,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 717,
            "test_target_items": 240,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 717
          },
          "warnings": [
            "Below the preferred size range; support filtering cannot add data",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "92835ca03692f0ed60e78c2f66cc371acff1765d89d1a47abd9259b68a7b267a",
            "profile_sha256": "6a945d67b733b1e23cbdc03f72dcb77c16127057acec8c8e2c01de4f060a236b",
            "checked_at_utc": "2026-09-09T06:42:23.000587+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 2,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 11257,
            "items": 575,
            "pairs": 24323,
            "train_users": 11257,
            "train_items": 575,
            "train_observed_items": 488,
            "val_users": 2285,
            "val_target_pairs": 2324,
            "test_users": 1445,
            "test_target_pairs": 1518,
            "preprocessed_users": 11333,
            "preprocessed_items": 575,
            "preprocessed_pairs": 28320,
            "val_target_items": 29,
            "val_cold_target_items": 29,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 575,
            "test_target_items": 58,
            "test_cold_target_items": 58,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 575
          },
          "warnings": [
            "Below the preferred size range; support filtering cannot add data",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "92835ca03692f0ed60e78c2f66cc371acff1765d89d1a47abd9259b68a7b267a",
            "profile_sha256": "6a945d67b733b1e23cbdc03f72dcb77c16127057acec8c8e2c01de4f060a236b",
            "checked_at_utc": "2026-09-09T06:42:23.738349+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 4,
            "item_min_support": 1,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 1201,
            "items": 503,
            "pairs": 3853,
            "train_users": 1201,
            "train_items": 503,
            "train_observed_items": 439,
            "val_users": 1201,
            "val_target_pairs": 1201,
            "test_users": 1201,
            "test_target_pairs": 1201,
            "preprocessed_users": 1201,
            "preprocessed_items": 503,
            "preprocessed_pairs": 6255,
            "val_target_items": 253,
            "val_cold_target_items": 37,
            "val_cold_target_item_fraction": 0.14624505928853754,
            "val_catalog_items": 503,
            "test_target_items": 244,
            "test_cold_target_items": 36,
            "test_cold_target_item_fraction": 0.14754098360655737,
            "test_catalog_items": 503
          },
          "warnings": [
            "Below the preferred size range; support filtering cannot add data",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "92835ca03692f0ed60e78c2f66cc371acff1765d89d1a47abd9259b68a7b267a",
            "profile_sha256": "6a945d67b733b1e23cbdc03f72dcb77c16127057acec8c8e2c01de4f060a236b",
            "checked_at_utc": "2026-09-09T06:42:23.863136+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 1,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 2313,
            "items": 421,
            "pairs": 2266,
            "train_users": 801,
            "train_items": 278,
            "train_observed_items": 278,
            "val_users": 1092,
            "val_target_pairs": 1237,
            "test_users": 577,
            "test_target_pairs": 686,
            "val_target_items": 123,
            "val_cold_target_items": 35,
            "val_cold_target_item_fraction": 0.2845528455284553,
            "val_catalog_items": 372,
            "test_target_items": 120,
            "test_cold_target_items": 46,
            "test_cold_target_item_fraction": 0.38333333333333336,
            "test_catalog_items": 421
          },
          "warnings": [
            "Fewer than 1,000 eligible users in validation or test",
            "Below the preferred size range; support filtering cannot add data",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "92835ca03692f0ed60e78c2f66cc371acff1765d89d1a47abd9259b68a7b267a",
            "profile_sha256": "6a945d67b733b1e23cbdc03f72dcb77c16127057acec8c8e2c01de4f060a236b",
            "checked_at_utc": "2026-09-09T06:42:24.003335+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "92835ca03692f0ed60e78c2f66cc371acff1765d89d1a47abd9259b68a7b267a",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Gift_Cards.csv",
            "sha256": "d356af4b1c9fc84a659070525a772c88277adc9be0ce7cbdfdd6424d0eb4917a"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Gift_Cards/full-00000-of-00001.parquet",
            "sha256": "3a321bb58f9daa840eb76257282bf5ea4ce33e6e3e7f8539bee47fe75aa52444"
          }
        ]
      }
    },
    {
      "category": "Grocery_and_Gourmet_Food",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 7,
            "item_min_support": 24,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 5000,
            "test_users": 5000
          },
          "stats": {
            "users": 98300,
            "items": 16735,
            "pairs": 1097509,
            "train_users": 88300,
            "train_items": 16735,
            "train_observed_items": 16735,
            "val_users": 5000,
            "val_target_pairs": 14650,
            "test_users": 5000,
            "test_target_pairs": 14678,
            "preprocessed_users": 98300,
            "preprocessed_items": 16735,
            "preprocessed_pairs": 1223271,
            "val_target_items": 7768,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 16735,
            "test_target_items": 7813,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 16735
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "858cfb3d1359bf88c6bdc99b3f4012e79fc9ceeca4e8e6708aae7de7007d524a",
            "profile_sha256": "9b389d42ff422481a7ffd3de7ad95aec5c636a4e4651c03ffbc9eddeb1506a6d",
            "checked_at_utc": "2026-09-09T06:42:31.691550+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 7,
            "item_min_support": 24,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 98300,
            "items": 16735,
            "pairs": 1045821,
            "train_users": 98300,
            "train_items": 16735,
            "train_observed_items": 14224,
            "val_users": 42173,
            "val_target_pairs": 60389,
            "test_users": 63925,
            "test_target_pairs": 117061,
            "preprocessed_users": 98300,
            "preprocessed_items": 16735,
            "preprocessed_pairs": 1223271,
            "val_target_items": 837,
            "val_cold_target_items": 837,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 16735,
            "test_target_items": 1674,
            "test_cold_target_items": 1674,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 16735
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "858cfb3d1359bf88c6bdc99b3f4012e79fc9ceeca4e8e6708aae7de7007d524a",
            "profile_sha256": "9b389d42ff422481a7ffd3de7ad95aec5c636a4e4651c03ffbc9eddeb1506a6d",
            "checked_at_utc": "2026-09-09T06:42:41.695724+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 7,
            "item_min_support": 24,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 98300,
            "items": 16735,
            "pairs": 1026671,
            "train_users": 98300,
            "train_items": 16735,
            "train_observed_items": 16735,
            "val_users": 98300,
            "val_target_pairs": 98300,
            "test_users": 98300,
            "test_target_pairs": 98300,
            "preprocessed_users": 98300,
            "preprocessed_items": 16735,
            "preprocessed_pairs": 1223271,
            "val_target_items": 15347,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 16735,
            "test_target_items": 14851,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 16735
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "858cfb3d1359bf88c6bdc99b3f4012e79fc9ceeca4e8e6708aae7de7007d524a",
            "profile_sha256": "9b389d42ff422481a7ffd3de7ad95aec5c636a4e4651c03ffbc9eddeb1506a6d",
            "checked_at_utc": "2026-09-09T06:42:48.408715+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 6,
            "item_min_support": 13,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 86148,
            "items": 19238,
            "pairs": 438683,
            "train_users": 37626,
            "train_items": 12329,
            "train_observed_items": 12329,
            "val_users": 50360,
            "val_target_pairs": 157670,
            "test_users": 34731,
            "test_target_pairs": 93094,
            "val_target_items": 14478,
            "val_cold_target_items": 4767,
            "val_cold_target_item_fraction": 0.32925818483215913,
            "val_catalog_items": 17500,
            "test_target_items": 13429,
            "test_cold_target_items": 5335,
            "test_cold_target_item_fraction": 0.39727455506739145,
            "test_catalog_items": 19238
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "858cfb3d1359bf88c6bdc99b3f4012e79fc9ceeca4e8e6708aae7de7007d524a",
            "profile_sha256": "9b389d42ff422481a7ffd3de7ad95aec5c636a4e4651c03ffbc9eddeb1506a6d",
            "checked_at_utc": "2026-09-09T06:43:02.047336+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "858cfb3d1359bf88c6bdc99b3f4012e79fc9ceeca4e8e6708aae7de7007d524a",
        "sources": [
          {
            "url": "https://mcauleylab.ucsd.edu/public_datasets/data/amazon_2023/benchmark/0core/rating_only/Grocery_and_Gourmet_Food.csv.gz",
            "sha256": "4cb2da7f57dfe210eecf348ee16514d11460022f0ce4ed141aa66e3eb5410135"
          },
          {
            "url": "https://mcauleylab.ucsd.edu/public_datasets/data/amazon_2023/raw/meta_categories/meta_Grocery_and_Gourmet_Food.jsonl.gz",
            "sha256": "ea678886c259d762fac3df5016c34dacd01bd0cc7f0f7aef51cc943f2326bad2"
          }
        ]
      }
    },
    {
      "category": "Handmade_Products",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 2,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 2215,
            "test_users": 2215
          },
          "stats": {
            "users": 21772,
            "items": 11613,
            "pairs": 40876,
            "train_users": 17726,
            "train_items": 11613,
            "train_observed_items": 11613,
            "val_users": 2006,
            "val_target_pairs": 2031,
            "test_users": 2040,
            "test_target_pairs": 2078,
            "preprocessed_users": 22156,
            "preprocessed_items": 11878,
            "preprocessed_pairs": 51025,
            "val_target_items": 1725,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 11613,
            "test_target_items": 1788,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 11613
          },
          "warnings": [
            "Below the preferred size range; support filtering cannot add data",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "84fb329b37294e3409caa9a0d11da61dbfb4fbea925962204b0dd3f192c9a364",
            "profile_sha256": "c729cf4def7aa31255a9ef1ac2430c2c441e8156501ef4fadaa4d029c831e143",
            "checked_at_utc": "2026-09-09T06:43:02.964773+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 2,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 21728,
            "items": 11878,
            "pairs": 43229,
            "train_users": 21728,
            "train_items": 11878,
            "train_observed_items": 10096,
            "val_users": 2335,
            "val_target_pairs": 2398,
            "test_users": 4283,
            "test_target_pairs": 4527,
            "preprocessed_users": 22156,
            "preprocessed_items": 11878,
            "preprocessed_pairs": 51025,
            "val_target_items": 587,
            "val_cold_target_items": 587,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 11878,
            "test_target_items": 1180,
            "test_cold_target_items": 1180,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 11878
          },
          "warnings": [
            "Below the preferred size range; support filtering cannot add data",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "84fb329b37294e3409caa9a0d11da61dbfb4fbea925962204b0dd3f192c9a364",
            "profile_sha256": "c729cf4def7aa31255a9ef1ac2430c2c441e8156501ef4fadaa4d029c831e143",
            "checked_at_utc": "2026-09-09T06:43:04.396327+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 4,
            "item_min_support": 1,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 3716,
            "items": 14723,
            "pairs": 12001,
            "train_users": 3716,
            "train_items": 14723,
            "train_observed_items": 9726,
            "val_users": 3716,
            "val_target_pairs": 3716,
            "test_users": 3716,
            "test_target_pairs": 3716,
            "preprocessed_users": 3716,
            "preprocessed_items": 14723,
            "preprocessed_pairs": 19433,
            "val_target_items": 3350,
            "val_cold_target_items": 2554,
            "val_cold_target_item_fraction": 0.7623880597014925,
            "val_catalog_items": 14723,
            "test_target_items": 3347,
            "test_cold_target_items": 2582,
            "test_cold_target_item_fraction": 0.7714371078577831,
            "test_catalog_items": 14723
          },
          "warnings": [
            "Below the preferred size range; support filtering cannot add data",
            "More items than users",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "84fb329b37294e3409caa9a0d11da61dbfb4fbea925962204b0dd3f192c9a364",
            "profile_sha256": "c729cf4def7aa31255a9ef1ac2430c2c441e8156501ef4fadaa4d029c831e143",
            "checked_at_utc": "2026-09-09T06:43:04.695777+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 3,
            "item_min_support": 1,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 3774,
            "items": 11710,
            "pairs": 5823,
            "train_users": 1459,
            "train_items": 5138,
            "train_observed_items": 5138,
            "val_users": 1410,
            "val_target_pairs": 2217,
            "test_users": 1251,
            "test_target_pairs": 2160,
            "val_target_items": 2029,
            "val_cold_target_items": 1799,
            "val_cold_target_item_fraction": 0.8866436668309512,
            "val_catalog_items": 8919,
            "test_target_items": 1708,
            "test_cold_target_items": 1582,
            "test_cold_target_item_fraction": 0.9262295081967213,
            "test_catalog_items": 11710
          },
          "warnings": [
            "Below the preferred size range; support filtering cannot add data",
            "More items than users",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "84fb329b37294e3409caa9a0d11da61dbfb4fbea925962204b0dd3f192c9a364",
            "profile_sha256": "c729cf4def7aa31255a9ef1ac2430c2c441e8156501ef4fadaa4d029c831e143",
            "checked_at_utc": "2026-09-09T06:43:04.981820+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "84fb329b37294e3409caa9a0d11da61dbfb4fbea925962204b0dd3f192c9a364",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Handmade_Products.csv",
            "sha256": "4a03dd49cdeb0a0087a898fe8c6143236f925ce0ff2f0c1fbd8d242dfc8471ce"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Handmade_Products/full-00000-of-00001.parquet",
            "sha256": "3a3cbc7810c8bd98c922ff129ef576391d71c2bbb9adc31494608d1638b515a7"
          }
        ]
      }
    },
    {
      "category": "Health_and_Household",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 10,
            "item_min_support": 20,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 5000,
            "test_users": 5000
          },
          "stats": {
            "users": 84204,
            "items": 19922,
            "pairs": 1177657,
            "train_users": 74204,
            "train_items": 19922,
            "train_observed_items": 19922,
            "val_users": 5000,
            "val_target_pairs": 17667,
            "test_users": 5000,
            "test_target_pairs": 17677,
            "preprocessed_users": 84204,
            "preprocessed_items": 19922,
            "preprocessed_pairs": 1335038,
            "val_target_items": 9180,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 19922,
            "test_target_items": 8986,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 19922
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "bbb625c27c15857221e4baf23ecd3e602b2105a04d63ea92ba97322f600be4a1",
            "profile_sha256": "9c06c5c65ed4443d5c790f7b7e2026b9ce8fc37fa87538ac6906bbe70885347f",
            "checked_at_utc": "2026-09-09T06:43:17.649616+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 10,
            "item_min_support": 20,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 84204,
            "items": 19922,
            "pairs": 1137763,
            "train_users": 84204,
            "train_items": 19922,
            "train_observed_items": 16932,
            "val_users": 44334,
            "val_target_pairs": 67684,
            "test_users": 63720,
            "test_target_pairs": 129591,
            "preprocessed_users": 84204,
            "preprocessed_items": 19922,
            "preprocessed_pairs": 1335038,
            "val_target_items": 997,
            "val_cold_target_items": 997,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 19922,
            "test_target_items": 1993,
            "test_cold_target_items": 1993,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 19922
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "bbb625c27c15857221e4baf23ecd3e602b2105a04d63ea92ba97322f600be4a1",
            "profile_sha256": "9c06c5c65ed4443d5c790f7b7e2026b9ce8fc37fa87538ac6906bbe70885347f",
            "checked_at_utc": "2026-09-09T06:43:27.147507+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 10,
            "item_min_support": 20,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 84204,
            "items": 19922,
            "pairs": 1166630,
            "train_users": 84204,
            "train_items": 19922,
            "train_observed_items": 19922,
            "val_users": 84204,
            "val_target_pairs": 84204,
            "test_users": 84204,
            "test_target_pairs": 84204,
            "preprocessed_users": 84204,
            "preprocessed_items": 19922,
            "preprocessed_pairs": 1335038,
            "val_target_items": 16439,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 19922,
            "test_target_items": 15703,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 19922
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "bbb625c27c15857221e4baf23ecd3e602b2105a04d63ea92ba97322f600be4a1",
            "profile_sha256": "9c06c5c65ed4443d5c790f7b7e2026b9ce8fc37fa87538ac6906bbe70885347f",
            "checked_at_utc": "2026-09-09T06:43:33.231218+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 8,
            "item_min_support": 15,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 88598,
            "items": 19907,
            "pairs": 552121,
            "train_users": 41151,
            "train_items": 12277,
            "train_observed_items": 12277,
            "val_users": 50052,
            "val_target_pairs": 145220,
            "test_users": 38620,
            "test_target_pairs": 120258,
            "val_target_items": 13166,
            "val_cold_target_items": 3489,
            "val_cold_target_item_fraction": 0.2650007595321282,
            "val_catalog_items": 16094,
            "test_target_items": 14545,
            "test_cold_target_items": 6433,
            "test_cold_target_item_fraction": 0.4422825713303541,
            "test_catalog_items": 19907
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "bbb625c27c15857221e4baf23ecd3e602b2105a04d63ea92ba97322f600be4a1",
            "profile_sha256": "9c06c5c65ed4443d5c790f7b7e2026b9ce8fc37fa87538ac6906bbe70885347f",
            "checked_at_utc": "2026-09-09T06:44:00.866357+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "bbb625c27c15857221e4baf23ecd3e602b2105a04d63ea92ba97322f600be4a1",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Health_and_Household.csv",
            "sha256": "78b9c04e216f735e2ab19679809ff57ded92becef24f432eddd1cfe25b85401f"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw/meta_categories/meta_Health_and_Household.jsonl",
            "sha256": "1a26906c721929a04e887eb7aac560e58e0c4f0a65ec5b24a047a560a43f0bc1"
          }
        ]
      }
    },
    {
      "category": "Health_and_Personal_Care",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 1,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 1839,
            "test_users": 1839
          },
          "stats": {
            "users": 16797,
            "items": 15041,
            "pairs": 35887,
            "train_users": 14718,
            "train_items": 15041,
            "train_observed_items": 15041,
            "val_users": 1041,
            "val_target_pairs": 1142,
            "test_users": 1038,
            "test_target_pairs": 1112,
            "preprocessed_users": 18396,
            "preprocessed_items": 17288,
            "preprocessed_pairs": 44928,
            "val_target_items": 940,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 15041,
            "test_target_items": 877,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 15041
          },
          "warnings": [
            "Below the preferred size range; support filtering cannot add data",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "b08ec842d21b18304ecd7d3345a1688a1245fd01520601c5ca1db869228f0aac",
            "profile_sha256": "1148fadbd0189f1b7f063cb9f788fb7913305ed75b0c313a3367ba6683ac8472",
            "checked_at_utc": "2026-09-09T06:43:05.431677+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 1,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 18017,
            "items": 17288,
            "pairs": 38004,
            "train_users": 18017,
            "train_items": 17288,
            "train_observed_items": 14694,
            "val_users": 1758,
            "val_target_pairs": 1841,
            "test_users": 3890,
            "test_target_pairs": 4315,
            "preprocessed_users": 18396,
            "preprocessed_items": 17288,
            "preprocessed_pairs": 44928,
            "val_target_items": 784,
            "val_cold_target_items": 784,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 17288,
            "test_target_items": 1585,
            "test_cold_target_items": 1585,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 17288
          },
          "warnings": [
            "Below the preferred size range; support filtering cannot add data",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "b08ec842d21b18304ecd7d3345a1688a1245fd01520601c5ca1db869228f0aac",
            "profile_sha256": "1148fadbd0189f1b7f063cb9f788fb7913305ed75b0c313a3367ba6683ac8472",
            "checked_at_utc": "2026-09-09T06:43:06.624934+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 4,
            "item_min_support": 1,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 1109,
            "items": 3448,
            "pairs": 6372,
            "train_users": 1109,
            "train_items": 3448,
            "train_observed_items": 2697,
            "val_users": 1109,
            "val_target_pairs": 1109,
            "test_users": 1109,
            "test_target_pairs": 1109,
            "preprocessed_users": 1109,
            "preprocessed_items": 3448,
            "preprocessed_pairs": 8590,
            "val_target_items": 911,
            "val_cold_target_items": 385,
            "val_cold_target_item_fraction": 0.4226125137211855,
            "val_catalog_items": 3448,
            "test_target_items": 857,
            "test_cold_target_items": 406,
            "test_cold_target_item_fraction": 0.47374562427071176,
            "test_catalog_items": 3448
          },
          "warnings": [
            "Below the preferred size range; support filtering cannot add data",
            "More items than users",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "b08ec842d21b18304ecd7d3345a1688a1245fd01520601c5ca1db869228f0aac",
            "profile_sha256": "1148fadbd0189f1b7f063cb9f788fb7913305ed75b0c313a3367ba6683ac8472",
            "checked_at_utc": "2026-09-09T06:43:06.773674+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 1,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 5291,
            "items": 7604,
            "pairs": 9108,
            "train_users": 2658,
            "train_items": 4625,
            "train_observed_items": 4625,
            "val_users": 2100,
            "val_target_pairs": 2849,
            "test_users": 1040,
            "test_target_pairs": 1186,
            "val_target_items": 1603,
            "val_cold_target_items": 1170,
            "val_cold_target_item_fraction": 0.7298814722395508,
            "val_catalog_items": 6778,
            "test_target_items": 762,
            "test_cold_target_items": 589,
            "test_cold_target_item_fraction": 0.7729658792650919,
            "test_catalog_items": 7604
          },
          "warnings": [
            "Below the preferred size range; support filtering cannot add data",
            "More items than users",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "b08ec842d21b18304ecd7d3345a1688a1245fd01520601c5ca1db869228f0aac",
            "profile_sha256": "1148fadbd0189f1b7f063cb9f788fb7913305ed75b0c313a3367ba6683ac8472",
            "checked_at_utc": "2026-09-09T06:43:06.989267+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "b08ec842d21b18304ecd7d3345a1688a1245fd01520601c5ca1db869228f0aac",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Health_and_Personal_Care.csv",
            "sha256": "3c671b00bf1fa832619d11bd2ac8cedbe5a784a8f85f2a392a93cd3e9b9fcba7"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw/meta_categories/meta_Health_and_Personal_Care.jsonl",
            "sha256": "eb7f147cac85ce22e6d9b63e8f8504e85032c8a666e8634a1f101a9533983c0a"
          }
        ]
      }
    },
    {
      "category": "Home_and_Kitchen",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 12,
            "item_min_support": 35,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 5000,
            "test_users": 5000
          },
          "stats": {
            "users": 96909,
            "items": 17431,
            "pairs": 1536242,
            "train_users": 86909,
            "train_items": 17431,
            "train_observed_items": 17431,
            "val_users": 5000,
            "val_target_pairs": 19698,
            "test_users": 5000,
            "test_target_pairs": 19564,
            "preprocessed_users": 96909,
            "preprocessed_items": 17431,
            "preprocessed_pairs": 1711987,
            "val_target_items": 9721,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 17431,
            "test_target_items": 9750,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 17431
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "f111099a56c5b771f0b954dd7cadc44d9fbce11a6060755007a26b926355a966",
            "profile_sha256": "087085c3b177f67f3fe08dea15330b034aadff0cf7775807ba268636be8a2947",
            "checked_at_utc": "2026-09-09T06:43:51.515790+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 12,
            "item_min_support": 35,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 96909,
            "items": 17431,
            "pairs": 1465801,
            "train_users": 96909,
            "train_items": 17431,
            "train_observed_items": 14815,
            "val_users": 51957,
            "val_target_pairs": 78214,
            "test_users": 78055,
            "test_target_pairs": 167972,
            "preprocessed_users": 96909,
            "preprocessed_items": 17431,
            "preprocessed_pairs": 1711987,
            "val_target_items": 872,
            "val_cold_target_items": 872,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 17431,
            "test_target_items": 1744,
            "test_cold_target_items": 1744,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 17431
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "f111099a56c5b771f0b954dd7cadc44d9fbce11a6060755007a26b926355a966",
            "profile_sha256": "087085c3b177f67f3fe08dea15330b034aadff0cf7775807ba268636be8a2947",
            "checked_at_utc": "2026-09-09T06:44:03.003843+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 12,
            "item_min_support": 35,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 96909,
            "items": 17431,
            "pairs": 1518169,
            "train_users": 96909,
            "train_items": 17431,
            "train_observed_items": 17431,
            "val_users": 96909,
            "val_target_pairs": 96909,
            "test_users": 96909,
            "test_target_pairs": 96909,
            "preprocessed_users": 96909,
            "preprocessed_items": 17431,
            "preprocessed_pairs": 1711987,
            "val_target_items": 15181,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 17431,
            "test_target_items": 14374,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 17431
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "f111099a56c5b771f0b954dd7cadc44d9fbce11a6060755007a26b926355a966",
            "profile_sha256": "087085c3b177f67f3fe08dea15330b034aadff0cf7775807ba268636be8a2947",
            "checked_at_utc": "2026-09-09T06:44:10.196762+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 10,
            "item_min_support": 25,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 93903,
            "items": 14879,
            "pairs": 712464,
            "train_users": 46574,
            "train_items": 11240,
            "train_observed_items": 11240,
            "val_users": 53997,
            "val_target_pairs": 128918,
            "test_users": 38614,
            "test_target_pairs": 94571,
            "val_target_items": 11264,
            "val_cold_target_items": 2279,
            "val_cold_target_item_fraction": 0.20232599431818182,
            "val_catalog_items": 13735,
            "test_target_items": 10726,
            "test_cold_target_items": 3091,
            "test_cold_target_item_fraction": 0.2881782584374417,
            "test_catalog_items": 14879
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "f111099a56c5b771f0b954dd7cadc44d9fbce11a6060755007a26b926355a966",
            "profile_sha256": "087085c3b177f67f3fe08dea15330b034aadff0cf7775807ba268636be8a2947",
            "checked_at_utc": "2026-09-09T06:45:53.415862+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "f111099a56c5b771f0b954dd7cadc44d9fbce11a6060755007a26b926355a966",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Home_and_Kitchen.csv",
            "sha256": "246d7f72379efd7be713bd931f50dc56f49f4a395d9c24804e7385bfbc16cc01"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw/meta_categories/meta_Home_and_Kitchen.jsonl",
            "sha256": "691353084748d985180deb13dc8de59afe4969933ad3692ea06b80460510aa56"
          }
        ]
      }
    },
    {
      "category": "Industrial_and_Scientific",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 4,
            "item_min_support": 8,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 5000,
            "test_users": 5000
          },
          "stats": {
            "users": 74487,
            "items": 19251,
            "pairs": 407624,
            "train_users": 64487,
            "train_items": 19251,
            "train_observed_items": 19251,
            "val_users": 5000,
            "val_target_pairs": 7814,
            "test_users": 5000,
            "test_target_pairs": 7777,
            "preprocessed_users": 74487,
            "preprocessed_items": 19251,
            "preprocessed_pairs": 471279,
            "val_target_items": 5348,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 19251,
            "test_target_items": 5350,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 19251
          },
          "warnings": [
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "bc12c9e19daf1c421ae2440e5801ffa427f0631cb2f5e200bdffdc28c4198ed0",
            "profile_sha256": "d8bf2b0f02175c28ce8b35d19aabf69619422cc06542cd9405bfe8d2d1a8d348",
            "checked_at_utc": "2026-09-09T06:44:04.430224+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 4,
            "item_min_support": 8,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 74479,
            "items": 19251,
            "pairs": 403192,
            "train_users": 74479,
            "train_items": 19251,
            "train_observed_items": 16362,
            "val_users": 17942,
            "val_target_pairs": 21388,
            "test_users": 33333,
            "test_target_pairs": 46667,
            "preprocessed_users": 74487,
            "preprocessed_items": 19251,
            "preprocessed_pairs": 471279,
            "val_target_items": 963,
            "val_cold_target_items": 963,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 19251,
            "test_target_items": 1926,
            "test_cold_target_items": 1926,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 19251
          },
          "warnings": [
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "bc12c9e19daf1c421ae2440e5801ffa427f0631cb2f5e200bdffdc28c4198ed0",
            "profile_sha256": "d8bf2b0f02175c28ce8b35d19aabf69619422cc06542cd9405bfe8d2d1a8d348",
            "checked_at_utc": "2026-09-09T06:44:10.492217+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 4,
            "item_min_support": 8,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 74487,
            "items": 19251,
            "pairs": 322305,
            "train_users": 74487,
            "train_items": 19251,
            "train_observed_items": 19229,
            "val_users": 74487,
            "val_target_pairs": 74487,
            "test_users": 74487,
            "test_target_pairs": 74487,
            "preprocessed_users": 74487,
            "preprocessed_items": 19251,
            "preprocessed_pairs": 471279,
            "val_target_items": 16742,
            "val_cold_target_items": 20,
            "val_cold_target_item_fraction": 0.001194600406164138,
            "val_catalog_items": 19251,
            "test_target_items": 16000,
            "test_cold_target_items": 22,
            "test_cold_target_item_fraction": 0.001375,
            "test_catalog_items": 19251
          },
          "warnings": [
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "bc12c9e19daf1c421ae2440e5801ffa427f0631cb2f5e200bdffdc28c4198ed0",
            "profile_sha256": "d8bf2b0f02175c28ce8b35d19aabf69619422cc06542cd9405bfe8d2d1a8d348",
            "checked_at_utc": "2026-09-09T06:44:15.026815+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 3,
            "item_min_support": 5,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 66901,
            "items": 17690,
            "pairs": 134812,
            "train_users": 26387,
            "train_items": 10270,
            "train_observed_items": 10270,
            "val_users": 31809,
            "val_target_pairs": 55913,
            "test_users": 23291,
            "test_target_pairs": 49760,
            "val_target_items": 10279,
            "val_cold_target_items": 3758,
            "val_cold_target_item_fraction": 0.36559976651425236,
            "val_catalog_items": 14663,
            "test_target_items": 10034,
            "test_cold_target_items": 5251,
            "test_cold_target_item_fraction": 0.5233207095874028,
            "test_catalog_items": 17690
          },
          "warnings": [
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "bc12c9e19daf1c421ae2440e5801ffa427f0631cb2f5e200bdffdc28c4198ed0",
            "profile_sha256": "d8bf2b0f02175c28ce8b35d19aabf69619422cc06542cd9405bfe8d2d1a8d348",
            "checked_at_utc": "2026-09-09T06:44:18.719282+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "bc12c9e19daf1c421ae2440e5801ffa427f0631cb2f5e200bdffdc28c4198ed0",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Industrial_and_Scientific.csv",
            "sha256": "8ac75135659eb03101cb82ac3898babae826b97d5af6cf148309db179e79e698"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Industrial_and_Scientific/full-00000-of-00002.parquet",
            "sha256": "9e1e0e4c88e2700e47637636332b8e72002b432ee633a6abb156e40afe43c40a"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Industrial_and_Scientific/full-00001-of-00002.parquet",
            "sha256": "2a25042623ed3b79dd64863611c5cbf0f1733a78a449dddf378ae00bdb0350ef"
          }
        ]
      }
    },
    {
      "category": "Kindle_Store",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 12,
            "item_min_support": 76,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 5000,
            "test_users": 5000
          },
          "stats": {
            "users": 98841,
            "items": 17800,
            "pairs": 2607203,
            "train_users": 88841,
            "train_items": 17800,
            "train_observed_items": 17800,
            "val_users": 5000,
            "val_target_pairs": 31550,
            "test_users": 5000,
            "test_target_pairs": 31734,
            "preprocessed_users": 98841,
            "preprocessed_items": 17800,
            "preprocessed_pairs": 2903296,
            "val_target_items": 13209,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 17800,
            "test_target_items": 13406,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 17800
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "976836b7338110c2d6343828c5544a3b2897d24320e3d5aa066ea39ce45d4768",
            "profile_sha256": "1733a9be98b400d4ed648e2d3b793af3751614fb4f77f5701a02d0cbafef9842",
            "checked_at_utc": "2026-09-09T06:44:35.175232+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 12,
            "item_min_support": 76,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 98841,
            "items": 17800,
            "pairs": 2471905,
            "train_users": 98841,
            "train_items": 17800,
            "train_observed_items": 15130,
            "val_users": 63226,
            "val_target_pairs": 140478,
            "test_users": 85505,
            "test_target_pairs": 290913,
            "preprocessed_users": 98841,
            "preprocessed_items": 17800,
            "preprocessed_pairs": 2903296,
            "val_target_items": 890,
            "val_cold_target_items": 890,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 17800,
            "test_target_items": 1780,
            "test_cold_target_items": 1780,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 17800
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "976836b7338110c2d6343828c5544a3b2897d24320e3d5aa066ea39ce45d4768",
            "profile_sha256": "1733a9be98b400d4ed648e2d3b793af3751614fb4f77f5701a02d0cbafef9842",
            "checked_at_utc": "2026-09-09T06:44:48.846918+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 12,
            "item_min_support": 76,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 98841,
            "items": 17800,
            "pairs": 2705614,
            "train_users": 98841,
            "train_items": 17800,
            "train_observed_items": 17800,
            "val_users": 98841,
            "val_target_pairs": 98841,
            "test_users": 98841,
            "test_target_pairs": 98841,
            "preprocessed_users": 98841,
            "preprocessed_items": 17800,
            "preprocessed_pairs": 2903296,
            "val_target_items": 15961,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 17800,
            "test_target_items": 15154,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 17800
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "976836b7338110c2d6343828c5544a3b2897d24320e3d5aa066ea39ce45d4768",
            "profile_sha256": "1733a9be98b400d4ed648e2d3b793af3751614fb4f77f5701a02d0cbafef9842",
            "checked_at_utc": "2026-09-09T06:44:57.508768+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 8,
            "item_min_support": 50,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 96853,
            "items": 19957,
            "pairs": 1680921,
            "train_users": 63259,
            "train_items": 16217,
            "train_observed_items": 16217,
            "val_users": 60020,
            "val_target_pairs": 284462,
            "test_users": 42975,
            "test_target_pairs": 149759,
            "val_target_items": 15954,
            "val_cold_target_items": 2673,
            "val_cold_target_item_fraction": 0.1675441895449417,
            "val_catalog_items": 18905,
            "test_target_items": 14155,
            "test_cold_target_items": 3477,
            "test_cold_target_item_fraction": 0.24563758389261744,
            "test_catalog_items": 19957
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "976836b7338110c2d6343828c5544a3b2897d24320e3d5aa066ea39ce45d4768",
            "profile_sha256": "1733a9be98b400d4ed648e2d3b793af3751614fb4f77f5701a02d0cbafef9842",
            "checked_at_utc": "2026-09-09T06:45:25.665042+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "976836b7338110c2d6343828c5544a3b2897d24320e3d5aa066ea39ce45d4768",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Kindle_Store.csv",
            "sha256": "ab0580593ef63d2964f0ef7ad20fd3b205f8ec810b98749e8db1ab7611436356"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw/meta_categories/meta_Kindle_Store.jsonl",
            "sha256": "acdaba5f1fb83805a2bf032ba3c7ddb83c695b03d6c41b785a81070d3b66a145"
          }
        ]
      }
    },
    {
      "category": "Magazine_Subscriptions",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 1,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 1200,
            "test_users": 1200
          },
          "stats": {
            "users": 6616,
            "items": 1708,
            "pairs": 11414,
            "train_users": 4408,
            "train_items": 1708,
            "train_observed_items": 1708,
            "val_users": 1115,
            "val_target_pairs": 1162,
            "test_users": 1093,
            "test_target_pairs": 1131,
            "preprocessed_users": 6808,
            "preprocessed_items": 2003,
            "preprocessed_pairs": 17586,
            "val_target_items": 472,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 1708,
            "test_target_items": 463,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 1708
          },
          "warnings": [
            "Below the preferred size range; support filtering cannot add data",
            "Short-history fallback"
          ],
          "verification": {
            "kind": "user-holdout-refinement",
            "checked_at_utc": "2026-09-08T23:58:59.846680+00:00",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "4c59063ffc17f5938cafc6ae6c93201c9ee2d4ddc329574c28fccd774c43dca3"
            },
            "environment": {
              "python": "3.11.16",
              "numpy": "2.4.6",
              "pandas": "3.0.5",
              "scipy": "1.17.1",
              "pyarrow": "25.0.1"
            },
            "rationale": "Larger disjoint protocol partitions reach at least 1,000 eligible users per evaluation phase without changing the preprocessed graph; 1,200 provides more margin than 1,100.",
            "baseline": {
              "status": "verified",
              "parameters": {
                "min_user_support": 2,
                "item_min_support": 1,
                "seed": 42,
                "min_entity_text_words": 0,
                "set_all_values_to": 1,
                "temporal_period_hours": 8136,
                "val_users": 680,
                "test_users": 680
              },
              "stats": {
                "users": 6722,
                "items": 1858,
                "pairs": 14082,
                "train_users": 5448,
                "train_items": 1858,
                "train_observed_items": 1858,
                "val_users": 642,
                "val_target_pairs": 674,
                "test_users": 632,
                "test_target_pairs": 651,
                "preprocessed_users": 6808,
                "preprocessed_items": 2003,
                "preprocessed_pairs": 17586
              },
              "warnings": [
                "Fewer than 1,000 eligible users in validation or test",
                "Below the preferred size range; support filtering cannot add data",
                "Short-history fallback"
              ]
            },
            "trials": [
              {
                "category": "Magazine_Subscriptions",
                "requested_each": 680,
                "stats": {
                  "users": 6722,
                  "items": 1858,
                  "pairs": 14082,
                  "train_users": 5448,
                  "train_items": 1858,
                  "train_observed_items": 1858,
                  "val_users": 642,
                  "val_target_pairs": 674,
                  "test_users": 632,
                  "test_target_pairs": 651,
                  "preprocessed_users": 6808,
                  "preprocessed_items": 2003,
                  "preprocessed_pairs": 17586
                }
              },
              {
                "category": "Magazine_Subscriptions",
                "requested_each": 1100,
                "stats": {
                  "users": 6638,
                  "items": 1729,
                  "pairs": 11912,
                  "train_users": 4608,
                  "train_items": 1729,
                  "train_observed_items": 1729,
                  "val_users": 1027,
                  "val_target_pairs": 1071,
                  "test_users": 1003,
                  "test_target_pairs": 1039,
                  "preprocessed_users": 6808,
                  "preprocessed_items": 2003,
                  "preprocessed_pairs": 17586
                }
              },
              {
                "category": "Magazine_Subscriptions",
                "requested_each": 1200,
                "stats": {
                  "users": 6616,
                  "items": 1708,
                  "pairs": 11414,
                  "train_users": 4408,
                  "train_items": 1708,
                  "train_observed_items": 1708,
                  "val_users": 1115,
                  "val_target_pairs": 1162,
                  "test_users": 1093,
                  "test_target_pairs": 1131,
                  "preprocessed_users": 6808,
                  "preprocessed_items": 2003,
                  "preprocessed_pairs": 17586
                }
              }
            ]
          },
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "e4578a58295c518e908a8fdd1a6f5e622b2a1e1c70c727bc0a46ca7e1e73def0",
            "profile_sha256": "366f05dc7f1b2644a4b96fac119940d5706ea52d217af889c493e226572423aa",
            "checked_at_utc": "2026-09-09T06:45:26.446153+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 2,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 6281,
            "items": 1241,
            "pairs": 13334,
            "train_users": 6281,
            "train_items": 1241,
            "train_observed_items": 1053,
            "val_users": 1070,
            "val_target_pairs": 1147,
            "test_users": 1594,
            "test_target_pairs": 1728,
            "preprocessed_users": 6408,
            "preprocessed_items": 1241,
            "preprocessed_pairs": 16467,
            "val_target_items": 63,
            "val_cold_target_items": 63,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 1241,
            "test_target_items": 124,
            "test_cold_target_items": 124,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 1241
          },
          "warnings": [
            "Below the preferred size range; support filtering cannot add data",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "e4578a58295c518e908a8fdd1a6f5e622b2a1e1c70c727bc0a46ca7e1e73def0",
            "profile_sha256": "366f05dc7f1b2644a4b96fac119940d5706ea52d217af889c493e226572423aa",
            "checked_at_utc": "2026-09-09T06:45:26.889665+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 4,
            "item_min_support": 1,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 797,
            "items": 1110,
            "pairs": 2822,
            "train_users": 797,
            "train_items": 1110,
            "train_observed_items": 918,
            "val_users": 797,
            "val_target_pairs": 797,
            "test_users": 797,
            "test_target_pairs": 797,
            "preprocessed_users": 797,
            "preprocessed_items": 1110,
            "preprocessed_pairs": 4416,
            "val_target_items": 353,
            "val_cold_target_items": 89,
            "val_cold_target_item_fraction": 0.2521246458923513,
            "val_catalog_items": 1110,
            "test_target_items": 381,
            "test_cold_target_items": 116,
            "test_cold_target_item_fraction": 0.30446194225721784,
            "test_catalog_items": 1110
          },
          "warnings": [
            "Fewer than 1,000 eligible users in validation or test",
            "Below the preferred size range; support filtering cannot add data",
            "More items than users",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "e4578a58295c518e908a8fdd1a6f5e622b2a1e1c70c727bc0a46ca7e1e73def0",
            "profile_sha256": "366f05dc7f1b2644a4b96fac119940d5706ea52d217af889c493e226572423aa",
            "checked_at_utc": "2026-09-09T06:45:26.995847+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 1,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 458,
            "items": 522,
            "pairs": 830,
            "train_users": 269,
            "train_items": 329,
            "train_observed_items": 329,
            "val_users": 151,
            "val_target_pairs": 193,
            "test_users": 74,
            "test_target_pairs": 93,
            "val_target_items": 117,
            "val_cold_target_items": 53,
            "val_cold_target_item_fraction": 0.452991452991453,
            "val_catalog_items": 474,
            "test_target_items": 66,
            "test_cold_target_items": 22,
            "test_cold_target_item_fraction": 0.3333333333333333,
            "test_catalog_items": 522
          },
          "warnings": [
            "Fewer than 1,000 eligible users in validation or test",
            "Below the preferred size range; support filtering cannot add data",
            "More items than users",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "e4578a58295c518e908a8fdd1a6f5e622b2a1e1c70c727bc0a46ca7e1e73def0",
            "profile_sha256": "366f05dc7f1b2644a4b96fac119940d5706ea52d217af889c493e226572423aa",
            "checked_at_utc": "2026-09-09T06:45:27.123750+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "e4578a58295c518e908a8fdd1a6f5e622b2a1e1c70c727bc0a46ca7e1e73def0",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Magazine_Subscriptions.csv",
            "sha256": "aafcdc89f141bb568c6125986bdc6808a4fe9b046625a47f9dea4aae8603dad9"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw/meta_categories/meta_Magazine_Subscriptions.jsonl",
            "sha256": "b325bc690a4b705338dfc3dd45ace5ec643dc6212cbb0c614a9b05f236ec12ab"
          }
        ]
      }
    },
    {
      "category": "Movies_and_TV",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 10,
            "item_min_support": 36,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 5000,
            "test_users": 5000
          },
          "stats": {
            "users": 97871,
            "items": 18324,
            "pairs": 1619663,
            "train_users": 87871,
            "train_items": 18324,
            "train_observed_items": 18324,
            "val_users": 5000,
            "val_target_pairs": 20518,
            "test_users": 5000,
            "test_target_pairs": 19909,
            "preprocessed_users": 97871,
            "preprocessed_items": 18324,
            "preprocessed_pairs": 1802427,
            "val_target_items": 10254,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 18324,
            "test_target_items": 10070,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 18324
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "1779cb0739da5f458a3510c45ce4b5e4c4c2bd513dded5ee526b688366422c80",
            "profile_sha256": "06e17525d0b71bd4c724e882cabbac6ce1644925351721651e5eb9af11fbda30",
            "checked_at_utc": "2026-09-09T06:45:37.123530+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 10,
            "item_min_support": 36,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 97871,
            "items": 18324,
            "pairs": 1539020,
            "train_users": 97871,
            "train_items": 18324,
            "train_observed_items": 15574,
            "val_users": 50964,
            "val_target_pairs": 83057,
            "test_users": 76392,
            "test_target_pairs": 180350,
            "preprocessed_users": 97871,
            "preprocessed_items": 18324,
            "preprocessed_pairs": 1802427,
            "val_target_items": 917,
            "val_cold_target_items": 917,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 18324,
            "test_target_items": 1833,
            "test_cold_target_items": 1833,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 18324
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "1779cb0739da5f458a3510c45ce4b5e4c4c2bd513dded5ee526b688366422c80",
            "profile_sha256": "06e17525d0b71bd4c724e882cabbac6ce1644925351721651e5eb9af11fbda30",
            "checked_at_utc": "2026-09-09T06:45:48.453582+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 10,
            "item_min_support": 36,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 97871,
            "items": 18324,
            "pairs": 1606685,
            "train_users": 97871,
            "train_items": 18324,
            "train_observed_items": 18324,
            "val_users": 97871,
            "val_target_pairs": 97871,
            "test_users": 97871,
            "test_target_pairs": 97871,
            "preprocessed_users": 97871,
            "preprocessed_items": 18324,
            "preprocessed_pairs": 1802427,
            "val_target_items": 16454,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 18324,
            "test_target_items": 15927,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 18324
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "1779cb0739da5f458a3510c45ce4b5e4c4c2bd513dded5ee526b688366422c80",
            "profile_sha256": "06e17525d0b71bd4c724e882cabbac6ce1644925351721651e5eb9af11fbda30",
            "checked_at_utc": "2026-09-09T06:45:55.785735+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 5,
            "item_min_support": 12,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 60122,
            "items": 17522,
            "pairs": 422446,
            "train_users": 32893,
            "train_items": 14804,
            "train_observed_items": 14804,
            "val_users": 31406,
            "val_target_pairs": 73348,
            "test_users": 16203,
            "test_target_pairs": 30264,
            "val_target_items": 10612,
            "val_cold_target_items": 1949,
            "val_cold_target_item_fraction": 0.1836600075386355,
            "val_catalog_items": 17115,
            "test_target_items": 6941,
            "test_cold_target_items": 1632,
            "test_cold_target_item_fraction": 0.23512462181241897,
            "test_catalog_items": 17522
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "1779cb0739da5f458a3510c45ce4b5e4c4c2bd513dded5ee526b688366422c80",
            "profile_sha256": "06e17525d0b71bd4c724e882cabbac6ce1644925351721651e5eb9af11fbda30",
            "checked_at_utc": "2026-09-09T06:46:11.916147+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "1779cb0739da5f458a3510c45ce4b5e4c4c2bd513dded5ee526b688366422c80",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Movies_and_TV.csv",
            "sha256": "b829b8f53177766cc8007b2ba3938e3ed5db945e88baa16f52833b19a4410a80"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw/meta_categories/meta_Movies_and_TV.jsonl",
            "sha256": "beb82feef266bfa6d2e279903fd823a8b3b9c065059e1048226d0b74dc16b47d"
          }
        ]
      }
    },
    {
      "category": "Musical_Instruments",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 5,
            "item_min_support": 7,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 5000,
            "test_users": 5000
          },
          "stats": {
            "users": 50431,
            "items": 16766,
            "pairs": 354789,
            "train_users": 40431,
            "train_items": 16766,
            "train_observed_items": 16766,
            "val_users": 5000,
            "val_target_pairs": 10556,
            "test_users": 5000,
            "test_target_pairs": 10527,
            "preprocessed_users": 50431,
            "preprocessed_items": 16766,
            "preprocessed_pairs": 442087,
            "val_target_items": 5933,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 16766,
            "test_target_items": 5863,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 16766
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "f2f14ba8897cf4ab1889e482937b74ea532342622234a1fc990958dde298de02",
            "profile_sha256": "ff093fa225e9892a3b5797e9f3323dcde1a2277fc5fd1c1d6da6f04309acee10",
            "checked_at_utc": "2026-09-09T06:45:57.097736+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 5,
            "item_min_support": 7,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 50429,
            "items": 16766,
            "pairs": 375422,
            "train_users": 50429,
            "train_items": 16766,
            "train_observed_items": 14250,
            "val_users": 18353,
            "val_target_pairs": 24337,
            "test_users": 27033,
            "test_target_pairs": 42318,
            "preprocessed_users": 50431,
            "preprocessed_items": 16766,
            "preprocessed_pairs": 442087,
            "val_target_items": 839,
            "val_cold_target_items": 839,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 16766,
            "test_target_items": 1677,
            "test_cold_target_items": 1677,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 16766
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "f2f14ba8897cf4ab1889e482937b74ea532342622234a1fc990958dde298de02",
            "profile_sha256": "ff093fa225e9892a3b5797e9f3323dcde1a2277fc5fd1c1d6da6f04309acee10",
            "checked_at_utc": "2026-09-09T06:46:01.604346+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 5,
            "item_min_support": 7,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 50431,
            "items": 16766,
            "pairs": 341225,
            "train_users": 50431,
            "train_items": 16766,
            "train_observed_items": 16760,
            "val_users": 50431,
            "val_target_pairs": 50431,
            "test_users": 50431,
            "test_target_pairs": 50431,
            "preprocessed_users": 50431,
            "preprocessed_items": 16766,
            "preprocessed_pairs": 442087,
            "val_target_items": 12985,
            "val_cold_target_items": 6,
            "val_cold_target_item_fraction": 0.0004620716211012707,
            "val_catalog_items": 16766,
            "test_target_items": 12681,
            "test_cold_target_items": 6,
            "test_cold_target_item_fraction": 0.0004731488052992666,
            "test_catalog_items": 16766
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "f2f14ba8897cf4ab1889e482937b74ea532342622234a1fc990958dde298de02",
            "profile_sha256": "ff093fa225e9892a3b5797e9f3323dcde1a2277fc5fd1c1d6da6f04309acee10",
            "checked_at_utc": "2026-09-09T06:46:04.793361+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 5,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 77684,
            "items": 15914,
            "pairs": 178287,
            "train_users": 36626,
            "train_items": 11545,
            "train_observed_items": 11545,
            "val_users": 32616,
            "val_target_pairs": 52681,
            "test_users": 23272,
            "test_target_pairs": 38889,
            "val_target_items": 10123,
            "val_cold_target_items": 2379,
            "val_cold_target_item_fraction": 0.23500938456979156,
            "val_catalog_items": 14306,
            "test_target_items": 9093,
            "test_cold_target_items": 3049,
            "test_cold_target_item_fraction": 0.33531287803805127,
            "test_catalog_items": 15914
          },
          "warnings": [
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "f2f14ba8897cf4ab1889e482937b74ea532342622234a1fc990958dde298de02",
            "profile_sha256": "ff093fa225e9892a3b5797e9f3323dcde1a2277fc5fd1c1d6da6f04309acee10",
            "checked_at_utc": "2026-09-09T06:46:06.967604+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "f2f14ba8897cf4ab1889e482937b74ea532342622234a1fc990958dde298de02",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Musical_Instruments.csv",
            "sha256": "315ce8178dbc3f0ecd48eaa1b5233e228bbb8e3a86ab6ca11439976eafbb5209"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Musical_Instruments/full-00000-of-00002.parquet",
            "sha256": "867567b573c4dc2860d476d0ac2de30bf9d4b3f77ae18e925d551d8d2170db6d"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Musical_Instruments/full-00001-of-00002.parquet",
            "sha256": "d9bf76dd54000c544d81939c1ba7a788c6553ae32745066a8dad668b75690544"
          }
        ]
      }
    },
    {
      "category": "Office_Products",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 5,
            "item_min_support": 18,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 5000,
            "test_users": 5000
          },
          "stats": {
            "users": 98570,
            "items": 12740,
            "pairs": 659700,
            "train_users": 88570,
            "train_items": 12740,
            "train_observed_items": 12740,
            "val_users": 5000,
            "val_target_pairs": 9138,
            "test_users": 5000,
            "test_target_pairs": 9158,
            "preprocessed_users": 98570,
            "preprocessed_items": 12740,
            "preprocessed_pairs": 734182,
            "val_target_items": 5177,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 12740,
            "test_target_items": 5178,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 12740
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "3459a6953272b6e80336585547a676d977170b93701b765c7bae11049907e680",
            "profile_sha256": "97aef26b1795a93b31ab66de8baf7ded33b64989e8150b15ac9804df837df536",
            "checked_at_utc": "2026-09-09T06:46:13.675909+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 5,
            "item_min_support": 18,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 98566,
            "items": 12740,
            "pairs": 625565,
            "train_users": 98566,
            "train_items": 12740,
            "train_observed_items": 10829,
            "val_users": 30907,
            "val_target_pairs": 37768,
            "test_users": 49343,
            "test_target_pairs": 70829,
            "preprocessed_users": 98570,
            "preprocessed_items": 12740,
            "preprocessed_pairs": 734182,
            "val_target_items": 637,
            "val_cold_target_items": 637,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 12740,
            "test_target_items": 1274,
            "test_cold_target_items": 1274,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 12740
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "3459a6953272b6e80336585547a676d977170b93701b765c7bae11049907e680",
            "profile_sha256": "97aef26b1795a93b31ab66de8baf7ded33b64989e8150b15ac9804df837df536",
            "checked_at_utc": "2026-09-09T06:46:22.233609+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 5,
            "item_min_support": 18,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 98570,
            "items": 12740,
            "pairs": 537042,
            "train_users": 98570,
            "train_items": 12740,
            "train_observed_items": 12738,
            "val_users": 98570,
            "val_target_pairs": 98570,
            "test_users": 98570,
            "test_target_pairs": 98570,
            "preprocessed_users": 98570,
            "preprocessed_items": 12740,
            "preprocessed_pairs": 734182,
            "val_target_items": 12194,
            "val_cold_target_items": 2,
            "val_cold_target_item_fraction": 0.0001640150893882237,
            "val_catalog_items": 12740,
            "test_target_items": 11905,
            "test_cold_target_items": 2,
            "test_cold_target_item_fraction": 0.00016799664006719866,
            "test_catalog_items": 12740
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "3459a6953272b6e80336585547a676d977170b93701b765c7bae11049907e680",
            "profile_sha256": "97aef26b1795a93b31ab66de8baf7ded33b64989e8150b15ac9804df837df536",
            "checked_at_utc": "2026-09-09T06:46:28.422292+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 4,
            "item_min_support": 8,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 90062,
            "items": 19965,
            "pairs": 275927,
            "train_users": 41089,
            "train_items": 12805,
            "train_observed_items": 12805,
            "val_users": 39715,
            "val_target_pairs": 70146,
            "test_users": 29909,
            "test_target_pairs": 74780,
            "val_target_items": 11142,
            "val_cold_target_items": 2544,
            "val_cold_target_item_fraction": 0.22832525578890683,
            "val_catalog_items": 15679,
            "test_target_items": 12535,
            "test_cold_target_items": 5958,
            "test_cold_target_item_fraction": 0.4753091344236139,
            "test_catalog_items": 19965
          },
          "warnings": [
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "3459a6953272b6e80336585547a676d977170b93701b765c7bae11049907e680",
            "profile_sha256": "97aef26b1795a93b31ab66de8baf7ded33b64989e8150b15ac9804df837df536",
            "checked_at_utc": "2026-09-09T06:46:40.227746+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "3459a6953272b6e80336585547a676d977170b93701b765c7bae11049907e680",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Office_Products.csv",
            "sha256": "49e56c2937d3388c68b656f489be0aeab6ac5a20d20c0a8d2f0b4cd192c063d1"
          },
          {
            "url": "https://mcauleylab.ucsd.edu/public_datasets/data/amazon_2023/raw/meta_categories/meta_Office_Products.jsonl.gz",
            "sha256": "2cd43a529967bc33d2bc074853ed940467e0d592493d0507df56676565d05594"
          }
        ]
      }
    },
    {
      "category": "Patio_Lawn_and_Garden",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 6,
            "item_min_support": 21,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 5000,
            "test_users": 5000
          },
          "stats": {
            "users": 98613,
            "items": 14019,
            "pairs": 777521,
            "train_users": 88613,
            "train_items": 14019,
            "train_observed_items": 14019,
            "val_users": 5000,
            "val_target_pairs": 11564,
            "test_users": 5000,
            "test_target_pairs": 11610,
            "preprocessed_users": 98613,
            "preprocessed_items": 14019,
            "preprocessed_pairs": 866002,
            "val_target_items": 6556,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 14019,
            "test_target_items": 6539,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 14019
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "e7a9b95708487a1f49f2cecf2bce26a8e5be0dde0b982b323a8a5f7c6eb814b7",
            "profile_sha256": "11f3572b94c765557f098321df967553b1dd599d19f349123d51b4f8dd83e438",
            "checked_at_utc": "2026-09-09T06:46:21.268209+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 6,
            "item_min_support": 21,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 98613,
            "items": 14019,
            "pairs": 739989,
            "train_users": 98613,
            "train_items": 14019,
            "train_observed_items": 11916,
            "val_users": 33334,
            "val_target_pairs": 41488,
            "test_users": 55849,
            "test_target_pairs": 84525,
            "preprocessed_users": 98613,
            "preprocessed_items": 14019,
            "preprocessed_pairs": 866002,
            "val_target_items": 701,
            "val_cold_target_items": 701,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 14019,
            "test_target_items": 1402,
            "test_cold_target_items": 1402,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 14019
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "e7a9b95708487a1f49f2cecf2bce26a8e5be0dde0b982b323a8a5f7c6eb814b7",
            "profile_sha256": "11f3572b94c765557f098321df967553b1dd599d19f349123d51b4f8dd83e438",
            "checked_at_utc": "2026-09-09T06:46:30.270876+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 6,
            "item_min_support": 21,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 98613,
            "items": 14019,
            "pairs": 668776,
            "train_users": 98613,
            "train_items": 14019,
            "train_observed_items": 14019,
            "val_users": 98613,
            "val_target_pairs": 98613,
            "test_users": 98613,
            "test_target_pairs": 98613,
            "preprocessed_users": 98613,
            "preprocessed_items": 14019,
            "preprocessed_pairs": 866002,
            "val_target_items": 13333,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 14019,
            "test_target_items": 12826,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 14019
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "e7a9b95708487a1f49f2cecf2bce26a8e5be0dde0b982b323a8a5f7c6eb814b7",
            "profile_sha256": "11f3572b94c765557f098321df967553b1dd599d19f349123d51b4f8dd83e438",
            "checked_at_utc": "2026-09-09T06:46:36.570580+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 5,
            "item_min_support": 13,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 89415,
            "items": 14329,
            "pairs": 269307,
            "train_users": 35226,
            "train_items": 8247,
            "train_observed_items": 8247,
            "val_users": 52279,
            "val_target_pairs": 105019,
            "test_users": 28043,
            "test_target_pairs": 57442,
            "val_target_items": 10667,
            "val_cold_target_items": 3797,
            "val_cold_target_item_fraction": 0.3559576263241774,
            "val_catalog_items": 12510,
            "test_target_items": 9718,
            "test_cold_target_items": 4540,
            "test_cold_target_item_fraction": 0.46717431570281953,
            "test_catalog_items": 14329
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "e7a9b95708487a1f49f2cecf2bce26a8e5be0dde0b982b323a8a5f7c6eb814b7",
            "profile_sha256": "11f3572b94c765557f098321df967553b1dd599d19f349123d51b4f8dd83e438",
            "checked_at_utc": "2026-09-09T06:46:53.678726+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "e7a9b95708487a1f49f2cecf2bce26a8e5be0dde0b982b323a8a5f7c6eb814b7",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Patio_Lawn_and_Garden.csv",
            "sha256": "8bdf196ddc7d958b4b00bf8b5b3a38197b7b402ef6da6bb74398ede92aa925a4"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw/meta_categories/meta_Patio_Lawn_and_Garden.jsonl",
            "sha256": "3a48d1328e6d1db8728764f124f64d35b7001a73d46beeaea5d390332a5afc8e"
          }
        ]
      }
    },
    {
      "category": "Pet_Supplies",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 10,
            "item_min_support": 16,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 5000,
            "test_users": 5000
          },
          "stats": {
            "users": 89150,
            "items": 19880,
            "pairs": 1238089,
            "train_users": 79150,
            "train_items": 19880,
            "train_observed_items": 19880,
            "val_users": 5000,
            "val_target_pairs": 17500,
            "test_users": 5000,
            "test_target_pairs": 17598,
            "preprocessed_users": 89150,
            "preprocessed_items": 19880,
            "preprocessed_pairs": 1394485,
            "val_target_items": 8436,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 19880,
            "test_target_items": 8533,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 19880
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "addbbdcb2ce4776af27a30d70343debf3f0ba06abb3729337558801c1324be69",
            "profile_sha256": "33b69204c29d032507904cc56f80e8886113727e99d76ff681967fc85cdb4a9a",
            "checked_at_utc": "2026-09-09T06:46:49.067572+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 10,
            "item_min_support": 16,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 89150,
            "items": 19880,
            "pairs": 1182394,
            "train_users": 89150,
            "train_items": 19880,
            "train_observed_items": 16898,
            "val_users": 46784,
            "val_target_pairs": 69831,
            "test_users": 68722,
            "test_target_pairs": 142260,
            "preprocessed_users": 89150,
            "preprocessed_items": 19880,
            "preprocessed_pairs": 1394485,
            "val_target_items": 994,
            "val_cold_target_items": 994,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 19880,
            "test_target_items": 1988,
            "test_cold_target_items": 1988,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 19880
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "addbbdcb2ce4776af27a30d70343debf3f0ba06abb3729337558801c1324be69",
            "profile_sha256": "33b69204c29d032507904cc56f80e8886113727e99d76ff681967fc85cdb4a9a",
            "checked_at_utc": "2026-09-09T06:46:59.016090+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 10,
            "item_min_support": 16,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 89150,
            "items": 19880,
            "pairs": 1216185,
            "train_users": 89150,
            "train_items": 19880,
            "train_observed_items": 19880,
            "val_users": 89150,
            "val_target_pairs": 89150,
            "test_users": 89150,
            "test_target_pairs": 89150,
            "preprocessed_users": 89150,
            "preprocessed_items": 19880,
            "preprocessed_pairs": 1394485,
            "val_target_items": 16106,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 19880,
            "test_target_items": 15361,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 19880
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "addbbdcb2ce4776af27a30d70343debf3f0ba06abb3729337558801c1324be69",
            "profile_sha256": "33b69204c29d032507904cc56f80e8886113727e99d76ff681967fc85cdb4a9a",
            "checked_at_utc": "2026-09-09T06:47:05.431564+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 8,
            "item_min_support": 12,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 88279,
            "items": 18400,
            "pairs": 584750,
            "train_users": 43228,
            "train_items": 13065,
            "train_observed_items": 13065,
            "val_users": 47781,
            "val_target_pairs": 124959,
            "test_users": 34883,
            "test_target_pairs": 99985,
            "val_target_items": 11921,
            "val_cold_target_items": 2317,
            "val_cold_target_item_fraction": 0.19436288901937757,
            "val_catalog_items": 15717,
            "test_target_items": 12385,
            "test_cold_target_items": 4477,
            "test_cold_target_item_fraction": 0.36148566814695193,
            "test_catalog_items": 18400
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "addbbdcb2ce4776af27a30d70343debf3f0ba06abb3729337558801c1324be69",
            "profile_sha256": "33b69204c29d032507904cc56f80e8886113727e99d76ff681967fc85cdb4a9a",
            "checked_at_utc": "2026-09-09T06:47:21.595290+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "addbbdcb2ce4776af27a30d70343debf3f0ba06abb3729337558801c1324be69",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Pet_Supplies.csv",
            "sha256": "3749f4478c0fc3c08537ba1df13ba41782d206501e1b84fc0324f3ae45a8d6db"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw/meta_categories/meta_Pet_Supplies.jsonl",
            "sha256": "69dfa0e6b34e8c34f5704fbf05682eb3edacac95d9b8e1fbf3f74720cbf67e50"
          }
        ]
      }
    },
    {
      "category": "Software",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 6,
            "item_min_support": 6,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 5000,
            "test_users": 5000
          },
          "stats": {
            "users": 98634,
            "items": 13664,
            "pairs": 916962,
            "train_users": 88634,
            "train_items": 13664,
            "train_observed_items": 13664,
            "val_users": 5000,
            "val_target_pairs": 13013,
            "test_users": 5000,
            "test_target_pairs": 13006,
            "preprocessed_users": 98634,
            "preprocessed_items": 13664,
            "preprocessed_pairs": 1021099,
            "val_target_items": 4254,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 13664,
            "test_target_items": 4129,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 13664
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "be811c9c30bebf3ed215d973d28692ad8095328f0930a79021dab175723ad459",
            "profile_sha256": "ddfc652371e4a1fef9b129f5b8b356e2c780f32073a9ae7a20dbb9e2fb64dd88",
            "checked_at_utc": "2026-09-09T06:46:57.337805+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 6,
            "item_min_support": 6,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 98633,
            "items": 13664,
            "pairs": 870039,
            "train_users": 98633,
            "train_items": 13664,
            "train_observed_items": 11613,
            "val_users": 34962,
            "val_target_pairs": 46454,
            "test_users": 62676,
            "test_target_pairs": 104600,
            "preprocessed_users": 98634,
            "preprocessed_items": 13664,
            "preprocessed_pairs": 1021099,
            "val_target_items": 684,
            "val_cold_target_items": 684,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 13664,
            "test_target_items": 1367,
            "test_cold_target_items": 1367,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 13664
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "be811c9c30bebf3ed215d973d28692ad8095328f0930a79021dab175723ad459",
            "profile_sha256": "ddfc652371e4a1fef9b129f5b8b356e2c780f32073a9ae7a20dbb9e2fb64dd88",
            "checked_at_utc": "2026-09-09T06:47:06.618725+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 6,
            "item_min_support": 6,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 98634,
            "items": 13664,
            "pairs": 823831,
            "train_users": 98634,
            "train_items": 13664,
            "train_observed_items": 13639,
            "val_users": 98634,
            "val_target_pairs": 98634,
            "test_users": 98634,
            "test_target_pairs": 98634,
            "preprocessed_users": 98634,
            "preprocessed_items": 13664,
            "preprocessed_pairs": 1021099,
            "val_target_items": 9800,
            "val_cold_target_items": 17,
            "val_cold_target_item_fraction": 0.0017346938775510204,
            "val_catalog_items": 13664,
            "test_target_items": 9400,
            "test_cold_target_items": 25,
            "test_cold_target_item_fraction": 0.0026595744680851063,
            "test_catalog_items": 13664
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "be811c9c30bebf3ed215d973d28692ad8095328f0930a79021dab175723ad459",
            "profile_sha256": "ddfc652371e4a1fef9b129f5b8b356e2c780f32073a9ae7a20dbb9e2fb64dd88",
            "checked_at_utc": "2026-09-09T06:47:12.997920+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 2,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 76101,
            "items": 14548,
            "pairs": 232769,
            "train_users": 42008,
            "train_items": 11639,
            "train_observed_items": 11639,
            "val_users": 29981,
            "val_target_pairs": 45775,
            "test_users": 14134,
            "test_target_pairs": 19128,
            "val_target_items": 5902,
            "val_cold_target_items": 1351,
            "val_cold_target_item_fraction": 0.22890545577770247,
            "val_catalog_items": 13887,
            "test_target_items": 3762,
            "test_cold_target_items": 934,
            "test_cold_target_item_fraction": 0.2482721956406167,
            "test_catalog_items": 14548
          },
          "warnings": [
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "be811c9c30bebf3ed215d973d28692ad8095328f0930a79021dab175723ad459",
            "profile_sha256": "ddfc652371e4a1fef9b129f5b8b356e2c780f32073a9ae7a20dbb9e2fb64dd88",
            "checked_at_utc": "2026-09-09T06:47:16.072182+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "be811c9c30bebf3ed215d973d28692ad8095328f0930a79021dab175723ad459",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Software.csv",
            "sha256": "2491500958015942b6be299788ec173ad626959d43cafecb96fc5bf40018dc15"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw/meta_categories/meta_Software.jsonl",
            "sha256": "7c52cce1bf3bff33f965fe117e3e8fac18a1839f88b215efa50b31a8230a5f58"
          }
        ]
      }
    },
    {
      "category": "Sports_and_Outdoors",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 6,
            "item_min_support": 17,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 5000,
            "test_users": 5000
          },
          "stats": {
            "users": 99084,
            "items": 19023,
            "pairs": 815594,
            "train_users": 89084,
            "train_items": 19023,
            "train_observed_items": 19023,
            "val_users": 5000,
            "val_target_pairs": 11899,
            "test_users": 5000,
            "test_target_pairs": 11845,
            "preprocessed_users": 99084,
            "preprocessed_items": 19023,
            "preprocessed_pairs": 907289,
            "val_target_items": 7398,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 19023,
            "test_target_items": 7431,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 19023
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "16493192d712ec05851dc272ad72ddc8095cde5d6014693e912813bcff753b09",
            "profile_sha256": "490369f37e7e46056c0bf46ffac532cef6f8ff5d09fc9fb73fc1b3fd48d52191",
            "checked_at_utc": "2026-09-09T06:47:27.949038+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 6,
            "item_min_support": 17,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 99083,
            "items": 19023,
            "pairs": 775040,
            "train_users": 99083,
            "train_items": 19023,
            "train_observed_items": 16168,
            "val_users": 35955,
            "val_target_pairs": 45785,
            "test_users": 55955,
            "test_target_pairs": 86458,
            "preprocessed_users": 99084,
            "preprocessed_items": 19023,
            "preprocessed_pairs": 907289,
            "val_target_items": 952,
            "val_cold_target_items": 952,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 19023,
            "test_target_items": 1903,
            "test_cold_target_items": 1903,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 19023
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "16493192d712ec05851dc272ad72ddc8095cde5d6014693e912813bcff753b09",
            "profile_sha256": "490369f37e7e46056c0bf46ffac532cef6f8ff5d09fc9fb73fc1b3fd48d52191",
            "checked_at_utc": "2026-09-09T06:47:37.183513+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 6,
            "item_min_support": 17,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 99084,
            "items": 19023,
            "pairs": 709121,
            "train_users": 99084,
            "train_items": 19023,
            "train_observed_items": 19023,
            "val_users": 99084,
            "val_target_pairs": 99084,
            "test_users": 99084,
            "test_target_pairs": 99084,
            "preprocessed_users": 99084,
            "preprocessed_items": 19023,
            "preprocessed_pairs": 907289,
            "val_target_items": 17601,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 19023,
            "test_target_items": 16816,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 19023
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "16493192d712ec05851dc272ad72ddc8095cde5d6014693e912813bcff753b09",
            "profile_sha256": "490369f37e7e46056c0bf46ffac532cef6f8ff5d09fc9fb73fc1b3fd48d52191",
            "checked_at_utc": "2026-09-09T06:47:43.564583+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 5,
            "item_min_support": 9,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 61892,
            "items": 18592,
            "pairs": 234732,
            "train_users": 28170,
            "train_items": 11498,
            "train_observed_items": 11498,
            "val_users": 29250,
            "val_target_pairs": 58931,
            "test_users": 20849,
            "test_target_pairs": 64618,
            "val_target_items": 10372,
            "val_cold_target_items": 2511,
            "val_cold_target_item_fraction": 0.2420940994986502,
            "val_catalog_items": 14454,
            "test_target_items": 11653,
            "test_cold_target_items": 5693,
            "test_cold_target_item_fraction": 0.4885437226465288,
            "test_catalog_items": 18592
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "16493192d712ec05851dc272ad72ddc8095cde5d6014693e912813bcff753b09",
            "profile_sha256": "490369f37e7e46056c0bf46ffac532cef6f8ff5d09fc9fb73fc1b3fd48d52191",
            "checked_at_utc": "2026-09-09T06:48:07.604205+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "16493192d712ec05851dc272ad72ddc8095cde5d6014693e912813bcff753b09",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Sports_and_Outdoors.csv",
            "sha256": "67478fe3be19d861b872597e152d236abb35a273a855d41bc78cf9b31df30ef4"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw/meta_categories/meta_Sports_and_Outdoors.jsonl",
            "sha256": "321aba659220c48a8dcf2a4034f1eb965fae031941d81c9b7e47811caae85db9"
          }
        ]
      }
    },
    {
      "category": "Subscription_Boxes",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 1,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 57,
            "test_users": 57
          },
          "stats": {
            "users": 547,
            "items": 291,
            "pairs": 1029,
            "train_users": 458,
            "train_items": 291,
            "train_observed_items": 291,
            "val_users": 42,
            "val_target_pairs": 42,
            "test_users": 47,
            "test_target_pairs": 47,
            "preprocessed_users": 572,
            "preprocessed_items": 327,
            "preprocessed_pairs": 1288,
            "val_target_items": 28,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 291,
            "test_target_items": 36,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 291
          },
          "warnings": [
            "Fewer than 1,000 eligible users in validation or test",
            "Below the preferred size range; support filtering cannot add data",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "f259b15170b2ea8f979c1664a90623b5ea1d6f4a18b4923ee28431610e7edf30",
            "profile_sha256": "07bcddeca55fc6b4773c38574c4164e8a11a8638df48414154b244b1493d20d1",
            "checked_at_utc": "2026-09-09T06:47:21.847752+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 1,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 553,
            "items": 327,
            "pairs": 1044,
            "train_users": 553,
            "train_items": 327,
            "train_observed_items": 277,
            "val_users": 56,
            "val_target_pairs": 56,
            "test_users": 141,
            "test_target_pairs": 148,
            "preprocessed_users": 572,
            "preprocessed_items": 327,
            "preprocessed_pairs": 1288,
            "val_target_items": 16,
            "val_cold_target_items": 16,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 327,
            "test_target_items": 31,
            "test_cold_target_items": 31,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 327
          },
          "warnings": [
            "Fewer than 1,000 eligible users in validation or test",
            "Below the preferred size range; support filtering cannot add data",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "f259b15170b2ea8f979c1664a90623b5ea1d6f4a18b4923ee28431610e7edf30",
            "profile_sha256": "07bcddeca55fc6b4773c38574c4164e8a11a8638df48414154b244b1493d20d1",
            "checked_at_utc": "2026-09-09T06:47:21.945713+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 4,
            "item_min_support": 1,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 24,
            "items": 86,
            "pairs": 68,
            "train_users": 24,
            "train_items": 86,
            "train_observed_items": 52,
            "val_users": 24,
            "val_target_pairs": 24,
            "test_users": 24,
            "test_target_pairs": 24,
            "preprocessed_users": 24,
            "preprocessed_items": 86,
            "preprocessed_pairs": 116,
            "val_target_items": 23,
            "val_cold_target_items": 18,
            "val_cold_target_item_fraction": 0.782608695652174,
            "val_catalog_items": 86,
            "test_target_items": 21,
            "test_cold_target_items": 20,
            "test_cold_target_item_fraction": 0.9523809523809523,
            "test_catalog_items": 86
          },
          "warnings": [
            "Fewer than 1,000 eligible users in validation or test",
            "Below the preferred size range; support filtering cannot add data",
            "More items than users",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "f259b15170b2ea8f979c1664a90623b5ea1d6f4a18b4923ee28431610e7edf30",
            "profile_sha256": "07bcddeca55fc6b4773c38574c4164e8a11a8638df48414154b244b1493d20d1",
            "checked_at_utc": "2026-09-09T06:47:22.009328+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 2,
            "item_min_support": 1,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 152,
            "items": 191,
            "pairs": 133,
            "train_users": 58,
            "train_items": 86,
            "train_observed_items": 86,
            "val_users": 59,
            "val_target_pairs": 75,
            "test_users": 42,
            "test_target_pairs": 48,
            "val_target_items": 62,
            "val_cold_target_items": 48,
            "val_cold_target_item_fraction": 0.7741935483870968,
            "val_catalog_items": 153,
            "test_target_items": 34,
            "test_cold_target_items": 30,
            "test_cold_target_item_fraction": 0.8823529411764706,
            "test_catalog_items": 191
          },
          "warnings": [
            "Fewer than 1,000 eligible users in validation or test",
            "Below the preferred size range; support filtering cannot add data",
            "More items than users",
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "f259b15170b2ea8f979c1664a90623b5ea1d6f4a18b4923ee28431610e7edf30",
            "profile_sha256": "07bcddeca55fc6b4773c38574c4164e8a11a8638df48414154b244b1493d20d1",
            "checked_at_utc": "2026-09-09T06:47:22.153959+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "f259b15170b2ea8f979c1664a90623b5ea1d6f4a18b4923ee28431610e7edf30",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Subscription_Boxes.csv",
            "sha256": "bf1e1760cd93c24905b64e948597e4d20b43021cdfd87a26fd99ecd60055d3ba"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw/meta_categories/meta_Subscription_Boxes.jsonl",
            "sha256": "b29c7bb1e3ad1419c33142c76d39782a9b8ae2fcbe27641186b88a10e1f31575"
          }
        ]
      }
    },
    {
      "category": "Tools_and_Home_Improvement",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 8,
            "item_min_support": 26,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 5000,
            "test_users": 5000
          },
          "stats": {
            "users": 94834,
            "items": 17307,
            "pairs": 1067854,
            "train_users": 84834,
            "train_items": 17307,
            "train_observed_items": 17307,
            "val_users": 5000,
            "val_target_pairs": 14558,
            "test_users": 5000,
            "test_target_pairs": 14130,
            "preprocessed_users": 94834,
            "preprocessed_items": 17307,
            "preprocessed_pairs": 1193473,
            "val_target_items": 8377,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 17307,
            "test_target_items": 8199,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 17307
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "2c27e1fbd5009d7ebe8b5542a033b5a82bb6a257d3559f0deb0ad3980f3e3e6a",
            "profile_sha256": "427c97bd2d1bba5ac3520e3cb7f4f9dc4e25152dc0e52bfbc6cdc0abda856468",
            "checked_at_utc": "2026-09-09T06:47:38.382624+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 8,
            "item_min_support": 26,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 94834,
            "items": 17307,
            "pairs": 1006137,
            "train_users": 94834,
            "train_items": 17307,
            "train_observed_items": 14710,
            "val_users": 45023,
            "val_target_pairs": 64128,
            "test_users": 66710,
            "test_target_pairs": 123208,
            "preprocessed_users": 94834,
            "preprocessed_items": 17307,
            "preprocessed_pairs": 1193473,
            "val_target_items": 866,
            "val_cold_target_items": 866,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 17307,
            "test_target_items": 1731,
            "test_cold_target_items": 1731,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 17307
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "2c27e1fbd5009d7ebe8b5542a033b5a82bb6a257d3559f0deb0ad3980f3e3e6a",
            "profile_sha256": "427c97bd2d1bba5ac3520e3cb7f4f9dc4e25152dc0e52bfbc6cdc0abda856468",
            "checked_at_utc": "2026-09-09T06:47:48.381562+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 8,
            "item_min_support": 26,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 94834,
            "items": 17307,
            "pairs": 1003805,
            "train_users": 94834,
            "train_items": 17307,
            "train_observed_items": 17307,
            "val_users": 94834,
            "val_target_pairs": 94834,
            "test_users": 94834,
            "test_target_pairs": 94834,
            "preprocessed_users": 94834,
            "preprocessed_items": 17307,
            "preprocessed_pairs": 1193473,
            "val_target_items": 15754,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 17307,
            "test_target_items": 15151,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 17307
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "2c27e1fbd5009d7ebe8b5542a033b5a82bb6a257d3559f0deb0ad3980f3e3e6a",
            "profile_sha256": "427c97bd2d1bba5ac3520e3cb7f4f9dc4e25152dc0e52bfbc6cdc0abda856468",
            "checked_at_utc": "2026-09-09T06:47:54.897131+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 6,
            "item_min_support": 18,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 99815,
            "items": 15514,
            "pairs": 473873,
            "train_users": 47269,
            "train_items": 11124,
            "train_observed_items": 11124,
            "val_users": 52511,
            "val_target_pairs": 108729,
            "test_users": 37242,
            "test_target_pairs": 88051,
            "val_target_items": 11518,
            "val_cold_target_items": 2456,
            "val_cold_target_item_fraction": 0.21323146379579788,
            "val_catalog_items": 13765,
            "test_target_items": 11481,
            "test_cold_target_items": 3800,
            "test_cold_target_item_fraction": 0.3309816218099469,
            "test_catalog_items": 15514
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "2c27e1fbd5009d7ebe8b5542a033b5a82bb6a257d3559f0deb0ad3980f3e3e6a",
            "profile_sha256": "427c97bd2d1bba5ac3520e3cb7f4f9dc4e25152dc0e52bfbc6cdc0abda856468",
            "checked_at_utc": "2026-09-09T06:48:27.958934+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "2c27e1fbd5009d7ebe8b5542a033b5a82bb6a257d3559f0deb0ad3980f3e3e6a",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Tools_and_Home_Improvement.csv",
            "sha256": "082d6e8cc6b546061ca10d33ca4fbb4bc9424f7a9c8570b14ebbc9320060bb97"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw/meta_categories/meta_Tools_and_Home_Improvement.jsonl",
            "sha256": "7b0e1ab6275a055fd1337d94dca6029eb401c31e21496608192d6564c1f25b0b"
          }
        ]
      }
    },
    {
      "category": "Toys_and_Games",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 6,
            "item_min_support": 22,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 5000,
            "test_users": 5000
          },
          "stats": {
            "users": 98065,
            "items": 15609,
            "pairs": 828331,
            "train_users": 88065,
            "train_items": 15609,
            "train_observed_items": 15609,
            "val_users": 5000,
            "val_target_pairs": 12061,
            "test_users": 5000,
            "test_target_pairs": 11993,
            "preprocessed_users": 98065,
            "preprocessed_items": 15609,
            "preprocessed_pairs": 921571,
            "val_target_items": 7090,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 15609,
            "test_target_items": 7031,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 15609
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "a91fbf26b36ba71925f665a730eee20c70db75db5677a61d76b576ea2fc979ab",
            "profile_sha256": "3b9b7bcfb0f88a4177452d99f60e711ca9e302cea34ce233b7e672d2f80c35bc",
            "checked_at_utc": "2026-09-09T06:48:17.076067+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 6,
            "item_min_support": 22,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 98064,
            "items": 15609,
            "pairs": 787497,
            "train_users": 98064,
            "train_items": 15609,
            "train_observed_items": 13267,
            "val_users": 34026,
            "val_target_pairs": 43678,
            "test_users": 56767,
            "test_target_pairs": 90390,
            "preprocessed_users": 98065,
            "preprocessed_items": 15609,
            "preprocessed_pairs": 921571,
            "val_target_items": 781,
            "val_cold_target_items": 781,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 15609,
            "test_target_items": 1561,
            "test_cold_target_items": 1561,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 15609
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "a91fbf26b36ba71925f665a730eee20c70db75db5677a61d76b576ea2fc979ab",
            "profile_sha256": "3b9b7bcfb0f88a4177452d99f60e711ca9e302cea34ce233b7e672d2f80c35bc",
            "checked_at_utc": "2026-09-09T06:48:26.212060+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 6,
            "item_min_support": 22,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 98065,
            "items": 15609,
            "pairs": 725441,
            "train_users": 98065,
            "train_items": 15609,
            "train_observed_items": 15608,
            "val_users": 98065,
            "val_target_pairs": 98065,
            "test_users": 98065,
            "test_target_pairs": 98065,
            "preprocessed_users": 98065,
            "preprocessed_items": 15609,
            "preprocessed_pairs": 921571,
            "val_target_items": 14818,
            "val_cold_target_items": 1,
            "val_cold_target_item_fraction": 0.00006748549061951681,
            "val_catalog_items": 15609,
            "test_target_items": 14342,
            "test_cold_target_items": 1,
            "test_cold_target_item_fraction": 0.00006972528238739367,
            "test_catalog_items": 15609
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "a91fbf26b36ba71925f665a730eee20c70db75db5677a61d76b576ea2fc979ab",
            "profile_sha256": "3b9b7bcfb0f88a4177452d99f60e711ca9e302cea34ce233b7e672d2f80c35bc",
            "checked_at_utc": "2026-09-09T06:48:32.559882+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 5,
            "item_min_support": 10,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 55927,
            "items": 17369,
            "pairs": 234102,
            "train_users": 26430,
            "train_items": 10382,
            "train_observed_items": 10382,
            "val_users": 23364,
            "val_target_pairs": 49512,
            "test_users": 20412,
            "test_target_pairs": 78237,
            "val_target_items": 8553,
            "val_cold_target_items": 1735,
            "val_cold_target_item_fraction": 0.20285280018706886,
            "val_catalog_items": 12297,
            "test_target_items": 11428,
            "test_cold_target_items": 6240,
            "test_cold_target_item_fraction": 0.5460273013650683,
            "test_catalog_items": 17369
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "a91fbf26b36ba71925f665a730eee20c70db75db5677a61d76b576ea2fc979ab",
            "profile_sha256": "3b9b7bcfb0f88a4177452d99f60e711ca9e302cea34ce233b7e672d2f80c35bc",
            "checked_at_utc": "2026-09-09T06:48:48.848274+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "a91fbf26b36ba71925f665a730eee20c70db75db5677a61d76b576ea2fc979ab",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Toys_and_Games.csv",
            "sha256": "d96ace397af9a5447c2f152b7195b819b6a78dbf586249b97295b0a01effd985"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Toys_and_Games/full-00000-of-00005.parquet",
            "sha256": "de03dc00dd34e5f3a37d9fcb85c16d3352d768d88d3b25df655723596e697d08"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Toys_and_Games/full-00001-of-00005.parquet",
            "sha256": "fbb68c7938ee7cd233755e96b65735fceff5ac52c00e28923f751336c9aa2237"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Toys_and_Games/full-00002-of-00005.parquet",
            "sha256": "e6b616e21b127deabe9c53f01129cf4213dd7a9161dd45d80392250b4f661ff4"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Toys_and_Games/full-00003-of-00005.parquet",
            "sha256": "5afbcb1084071ccea033960236131feac73cd9f1771990dde13e53b34447a460"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw_meta_Toys_and_Games/full-00004-of-00005.parquet",
            "sha256": "1beb755c24eb9b33505b69924809d1290d824ba1e053d7b559b3519faa4bb668"
          }
        ]
      }
    },
    {
      "category": "Video_Games",
      "splits": {
        "user_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 5,
            "item_min_support": 7,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136,
            "val_users": 5000,
            "test_users": 5000
          },
          "stats": {
            "users": 88081,
            "items": 19227,
            "pairs": 667965,
            "train_users": 78081,
            "train_items": 19227,
            "train_observed_items": 19227,
            "val_users": 5000,
            "val_target_pairs": 10359,
            "test_users": 5000,
            "test_target_pairs": 10339,
            "preprocessed_users": 88081,
            "preprocessed_items": 19227,
            "preprocessed_pairs": 753639,
            "val_target_items": 5574,
            "val_cold_target_items": 0,
            "val_cold_target_item_fraction": 0,
            "val_catalog_items": 19227,
            "test_target_items": 5551,
            "test_cold_target_items": 0,
            "test_cold_target_item_fraction": 0,
            "test_catalog_items": 19227
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "50d7524a5ad76d4aa28f6b0b21090ca7d61222824e015d931b9d08cfe84e481d",
            "profile_sha256": "d5b2ecbe13cd21abf827920cf2723ae046254f85395fc115892cf4a52369f0db",
            "checked_at_utc": "2026-09-09T06:48:31.520366+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "item_split": {
          "status": "verified",
          "parameters": {
            "min_user_support": 5,
            "item_min_support": 7,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 88077,
            "items": 19227,
            "pairs": 635194,
            "train_users": 88077,
            "train_items": 19227,
            "train_observed_items": 16342,
            "val_users": 30322,
            "val_target_pairs": 39890,
            "test_users": 48790,
            "test_target_pairs": 78534,
            "preprocessed_users": 88081,
            "preprocessed_items": 19227,
            "preprocessed_pairs": 753639,
            "val_target_items": 962,
            "val_cold_target_items": 962,
            "val_cold_target_item_fraction": 1,
            "val_catalog_items": 19227,
            "test_target_items": 1923,
            "test_cold_target_items": 1923,
            "test_cold_target_item_fraction": 1,
            "test_catalog_items": 19227
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "50d7524a5ad76d4aa28f6b0b21090ca7d61222824e015d931b9d08cfe84e481d",
            "profile_sha256": "d5b2ecbe13cd21abf827920cf2723ae046254f85395fc115892cf4a52369f0db",
            "checked_at_utc": "2026-09-09T06:48:39.428132+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "leave_last_out": {
          "status": "verified",
          "parameters": {
            "min_user_support": 5,
            "item_min_support": 7,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 88081,
            "items": 19227,
            "pairs": 577477,
            "train_users": 88081,
            "train_items": 19227,
            "train_observed_items": 19202,
            "val_users": 88081,
            "val_target_pairs": 88081,
            "test_users": 88081,
            "test_target_pairs": 88081,
            "preprocessed_users": 88081,
            "preprocessed_items": 19227,
            "preprocessed_pairs": 753639,
            "val_target_items": 15526,
            "val_cold_target_items": 23,
            "val_cold_target_item_fraction": 0.0014813860620893984,
            "val_catalog_items": 19227,
            "test_target_items": 15042,
            "test_cold_target_items": 25,
            "test_cold_target_item_fraction": 0.0016620130301821566,
            "test_catalog_items": 19227
          },
          "warnings": [],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "50d7524a5ad76d4aa28f6b0b21090ca7d61222824e015d931b9d08cfe84e481d",
            "profile_sha256": "d5b2ecbe13cd21abf827920cf2723ae046254f85395fc115892cf4a52369f0db",
            "checked_at_utc": "2026-09-09T06:48:44.952407+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        },
        "temporal": {
          "status": "verified",
          "parameters": {
            "min_user_support": 3,
            "item_min_support": 4,
            "seed": 42,
            "min_entity_text_words": 0,
            "set_all_values_to": 1,
            "temporal_period_hours": 8136
          },
          "stats": {
            "users": 70806,
            "items": 16463,
            "pairs": 183119,
            "train_users": 31401,
            "train_items": 11338,
            "train_observed_items": 11338,
            "val_users": 30103,
            "val_target_pairs": 50022,
            "test_users": 21917,
            "test_target_pairs": 40013,
            "val_target_items": 7650,
            "val_cold_target_items": 2257,
            "val_cold_target_item_fraction": 0.29503267973856206,
            "val_catalog_items": 14273,
            "test_target_items": 7253,
            "test_cold_target_items": 3482,
            "test_cold_target_item_fraction": 0.48007720943058046,
            "test_catalog_items": 16463
          },
          "warnings": [
            "Short-history fallback"
          ],
          "evaluation_verification": {
            "kind": "evaluation-detail-audit",
            "code": {
              "script_sha256": "3921201c2513929546a780fd57bff300815298006ecb4de27be6fc2522821008",
              "package_sha256": "5c641cab9b44db50c41efc8c0a71baa477328dcff93b4bfe9cc0a4f56fecd073",
              "details_sha256": "74591c0543c9b340f08eb638b79b11e141a2b2ad86ed76020da3dcce188a21ac"
            },
            "prepared_sha256": "50d7524a5ad76d4aa28f6b0b21090ca7d61222824e015d931b9d08cfe84e481d",
            "profile_sha256": "d5b2ecbe13cd21abf827920cf2723ae046254f85395fc115892cf4a52369f0db",
            "checked_at_utc": "2026-09-09T06:48:47.958554+00:00",
            "cold_definition": "distinct eligible target items absent from nonzero x_train interactions"
          }
        }
      },
      "input": {
        "prepared_sha256": "50d7524a5ad76d4aa28f6b0b21090ca7d61222824e015d931b9d08cfe84e481d",
        "sources": [
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/benchmark/0core/rating_only/Video_Games.csv",
            "sha256": "1216270fdd163d085bd3efe2d98f4850f408e5a201edd37d74f9d86b74418746"
          },
          {
            "url": "https://huggingface.co/datasets/McAuley-Lab/Amazon-Reviews-2023/resolve/main/raw/meta_categories/meta_Video_Games.jsonl",
            "sha256": "3ad94dfaa8dfed23c5f420aa9ddec415d00f2b8ec9f2d796f487b4b2c4d256de"
          }
        ]
      }
    }
  ],
  "evaluation_detail_audit": {
    "status": "complete",
    "verified_profiles": 132,
    "cold_definition": "Fraction of distinct eligible target items absent from nonzero x_train interactions; not interaction-weighted."
  }
}
