{
  "dataset": {
    "name": "MovieLens-1M",
    "users": 6038,
    "items": 3706,
    "fresh_items": 804,
    "underexplored_items": 413,
    "exploration_corpus_items": 206
  },
  "setup": {
    "seeds": [
      42,
      43,
      44
    ],
    "steps_per_model": 100,
    "selected_ucb_alpha": [
      0.0,
      0.0,
      0.0
    ]
  },
  "baseline": {
    "ndcg_at_10": 0.001612762019323125,
    "fresh_ndcg_at_10": 0.0013599607708681533,
    "underexplored_exposure_at_10": 0.03884288395716021
  },
  "pinequalizer": {
    "ndcg_at_10": 0.00134759249830743,
    "fresh_ndcg_at_10": 0.0074610380317409394,
    "underexplored_exposure_at_10": 0.2218008170475875
  },
  "relative_percent": {
    "ndcg_at_10": -16.44194976311424,
    "fresh_ndcg_at_10": 448.6215625894902,
    "underexplored_exposure_at_10": 471.02046617396246
  },
  "schema_version": 2,
  "manifest_ref": "reproduction:pinequalizer",
  "evaluation_protocol": {
    "tier": "l2_public_dataset",
    "seeds": [
      42,
      43,
      44
    ],
    "formal_comparison": true,
    "claim_policy": "formal multi-seed comparison"
  },
  "provenance": {
    "artifact_path": "docs/reproductions/2607.22518-pinequalizer/metrics/movielens-1m-seed42-44.json",
    "historical_migration": "historical-metrics-v2-2026-08-09",
    "original_code_commit": "not recorded",
    "dataset_fingerprint": "not recorded in historical artifact"
  }
}