{
  "dataset": "MovieLens-100K",
  "protocol": "chronological leave-two-out, full-catalog ranking",
  "seeds": [
    42,
    43,
    44
  ],
  "pretrain_steps": 160,
  "finetune_steps": 160,
  "validation": {
    "scratch_dcat": {
      "ndcg_at_10": 0.0140930098,
      "ndcg_at_10_std": 0.0031108571
    },
    "pinfm": {
      "ndcg_at_10": 0.0131820702,
      "ndcg_at_10_std": 0.0059409469
    },
    "ndcg_gain_percent": -6.4637691199
  },
  "test": {
    "scratch_dcat": {
      "parameters": 165426,
      "hit_at_10": 0.0300429185,
      "hit_at_10_std": 0.0030347931,
      "ndcg_at_10": 0.0134342081,
      "ndcg_at_10_std": 0.0017049289,
      "head_share_at_10": 0.7556866953
    },
    "pinfm": {
      "parameters": 165426,
      "hit_at_10": 0.0268240343,
      "hit_at_10_std": 0.0113889008,
      "ndcg_at_10": 0.0129549689,
      "ndcg_at_10_std": 0.0064796116,
      "head_share_at_10": 0.2016452074
    }
  },
  "test_ndcg_gain_percent": -3.5673052842,
  "schema_version": 2,
  "manifest_ref": "reproduction:pinfm",
  "evaluation_protocol": {
    "tier": "l2_public_dataset",
    "seeds": [
      42,
      43,
      44
    ],
    "formal_comparison": true,
    "claim_policy": "formal multi-seed comparison"
  },
  "provenance": {
    "artifact_path": "docs/reproductions/2507.12704-pinfm/metrics/movielens-100k-seeds42-44.json",
    "historical_migration": "historical-metrics-v2-2026-08-09",
    "original_code_commit": "not recorded",
    "dataset_fingerprint": "not recorded in historical artifact"
  }
}