{
  "dataset": "MovieLens-100K",
  "protocol": "chronological leave-two-out, full-catalog ranking",
  "seeds": [
    42,
    43,
    44
  ],
  "steps_per_seed": 160,
  "transact": {
    "parameters": 137073,
    "hit_at_10": 0.0271816881,
    "hit_at_10_std": 0.0013382179,
    "ndcg_at_10": 0.0127719003,
    "ndcg_at_10_std": 0.0011353332,
    "head_share_at_10": 0.8429542203
  },
  "transact_v2": {
    "parameters": 137073,
    "hit_at_10": 0.0493562232,
    "hit_at_10_std": 0.0017521386,
    "ndcg_at_10": 0.0246046433,
    "ndcg_at_10_std": 0.0005666969,
    "head_share_at_10": 0.9899499285
  },
  "ndcg_gain_percent": 92.6466906145,
  "schema_version": 2,
  "manifest_ref": "reproduction:transact-v2",
  "evaluation_protocol": {
    "tier": "l2_public_dataset",
    "seeds": [
      42,
      43,
      44
    ],
    "formal_comparison": true,
    "claim_policy": "formal multi-seed comparison"
  },
  "provenance": {
    "artifact_path": "docs/reproductions/2506.02267-transact-v2/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"
  }
}