{
  "paper": "2505.04421",
  "adapter": "longer",
  "fidelity": "core_mechanism",
  "dataset": "MovieLens-100K",
  "setup": {
    "users": 932,
    "items": 1682,
    "seeds": [
      42,
      43,
      44
    ],
    "group_size": 4,
    "history_length": 32,
    "steps": 90
  },
  "results": {
    "recent_sequence_transformer": {
      "hit_at_10": 0.0057224607,
      "hit_at_10_std": 0.0013382179,
      "ndcg_at_10": 0.0025852986,
      "ndcg_at_10_std": 0.0008082573
    },
    "longer_hybrid_attention": {
      "hit_at_10": 0.0046494993,
      "hit_at_10_std": 0.0039504152,
      "ndcg_at_10": 0.0020327831,
      "ndcg_at_10_std": 0.001714998
    }
  },
  "relative_ndcg_change_percent": -21.3714396,
  "schema_version": 2,
  "manifest_ref": "reproduction:longer",
  "evaluation_protocol": {
    "tier": "l2_public_dataset",
    "seeds": [
      42,
      43,
      44
    ],
    "formal_comparison": true,
    "claim_policy": "formal multi-seed comparison"
  },
  "provenance": {
    "artifact_path": "docs/reproductions/2505.04421-longer/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"
  }
}