{
  "paper": {
    "arxiv_id": "2501.15816",
    "title": "AdaF²M²: Comprehensive Learning and Responsive Leveraging Features in Recommendation System",
    "url": "https://arxiv.org/abs/2501.15816"
  },
  "dataset": {
    "name": "MovieLens-1M",
    "users": 420,
    "items": 640,
    "full_catalog_evaluation": true
  },
  "setup": {
    "seed": 42,
    "mechanism": "feature_mask_adapter"
  },
  "baseline": {
    "name": "single-forward full-feature ranker",
    "hit_at_10": 0.14047619047619048,
    "ndcg_at_10": 0.07513562832974019,
    "mrr_at_10": 0.05541099773242629,
    "head_share_at_10": 0.21761904761904763
  },
  "method": {
    "name": "AdaF²M² feature-mask multi-forward + state-aware adapter",
    "hit_at_10": 0.14047619047619048,
    "ndcg_at_10": 0.07695602850444075,
    "mrr_at_10": 0.057859032501889646,
    "head_share_at_10": 0.15976190476190477
  },
  "relative": {
    "hit_at_10_percent": 0.0,
    "ndcg_at_10_percent": 2.422818861261866,
    "mrr_at_10_percent": 4.417958292836832,
    "head_share_at_10_percent": -26.58643326039387
  },
  "diagnostics": {
    "masked_forwards": 3,
    "validation_blend_weight": 0.5,
    "validation_ndcg_candidates": [
      0.064505,
      0.068814,
      0.059669,
      0.045814
    ]
  },
  "paper_results": {
    "active_days_percent": 1.37,
    "app_duration_percent": 1.89
  },
  "scope": "实际进行多组特征 mask 前向、共享表示集成，并按用户历史长度和物品热度动态调节 adapter；未复刻抖音私有特征、召回/精排全链路和线上状态。",
  "schema_version": 2,
  "manifest_ref": "reproduction:adaf2m2",
  "evaluation_protocol": {
    "tier": "l2_public_dataset",
    "seeds": [
      42
    ],
    "formal_comparison": false,
    "claim_policy": "single/few-seed smoke result; do not claim a stable improvement"
  },
  "provenance": {
    "artifact_path": "docs/reproductions/2501.15816-adaf2m2/metrics/movielens-1m-seed42.json",
    "historical_migration": "historical-metrics-v2-2026-08-09",
    "original_code_commit": "not recorded",
    "dataset_fingerprint": "not recorded in historical artifact"
  }
}