{
  "paper": "2502.08309 LUM",
  "dataset": "MovieLens-1M ratings, genres, chronological behavior",
  "protocol": {
    "seeds": [
      42,
      43,
      44
    ],
    "users": 1000,
    "items": 3381,
    "conditions": 3,
    "pretrain_examples": 121734,
    "train": 6000,
    "test": 1500,
    "pretrain_steps": 200,
    "ranker_steps": 160,
    "history_length": 16
  },
  "per_seed": {
    "42": {
      "pretrain_initial": 4.623697,
      "pretrain_final": 4.41093,
      "dlrm_auc": 0.5660772,
      "lum_auc": 0.6570409
    },
    "43": {
      "pretrain_initial": 4.617361,
      "pretrain_final": 4.391461,
      "dlrm_auc": 0.6073366,
      "lum_auc": 0.6717141
    },
    "44": {
      "pretrain_initial": 4.64647,
      "pretrain_final": 4.402365,
      "dlrm_auc": 0.5735757,
      "lum_auc": 0.6732561
    }
  },
  "aggregate": {
    "dlrm_auc_mean": 0.5823298,
    "dlrm_auc_std": 0.0179455,
    "lum_auc_mean": 0.667337,
    "lum_auc_std": 0.0073076,
    "relative_percent": 14.5978,
    "positive_seeds": 3
  },
  "schema_version": 2,
  "manifest_ref": "reproduction:lum",
  "evaluation_protocol": {
    "tier": "l3_paper_pipeline",
    "seeds": [
      42,
      43,
      44
    ],
    "formal_comparison": true,
    "claim_policy": "formal multi-seed comparison"
  },
  "provenance": {
    "artifact_path": "docs/reproductions/2502.08309-lum/metrics/movielens-1m-seeds42-44.json",
    "historical_migration": "historical-metrics-v2-2026-08-09",
    "original_code_commit": "not recorded",
    "dataset_fingerprint": "not recorded in historical artifact"
  }
}