{
  "paper": {
    "arxiv_id": "2512.24787",
    "title": "HiGR: Industrial-Scale Hierarchical Generative Slate Recommendation Framework in Tencent",
    "url": "https://arxiv.org/abs/2512.24787"
  },
  "dataset": {
    "name": "MovieLens-1M",
    "users": 420,
    "items": 640,
    "full_catalog_evaluation": true
  },
  "setup": {
    "seed": 42,
    "mechanism": "hierarchical_slate"
  },
  "baseline": {
    "name": "flat item-level slate ranking",
    "hit_at_10": 0.14047619047619048,
    "ndcg_at_10": 0.07513562832974019,
    "mrr_at_10": 0.05541099773242629,
    "head_share_at_10": 0.21761904761904763
  },
  "method": {
    "name": "HiGR residual semantic IDs + hierarchical slate decoder + ORPO",
    "hit_at_10": 0.1357142857142857,
    "ndcg_at_10": 0.06587800283078647,
    "mrr_at_10": 0.04515306122448979,
    "head_share_at_10": 0.15714285714285714
  },
  "relative": {
    "hit_at_10_percent": -3.389830508474584,
    "ndcg_at_10_percent": -12.321219246780908,
    "mrr_at_10_percent": -18.51245588009616,
    "head_share_at_10_percent": -27.789934354485784
  },
  "diagnostics": {
    "coarse_codes": 16,
    "fine_codes": 8,
    "validation_blend_weight": 0.25,
    "validation_ndcg_candidates": [
      0.066741,
      0.063685,
      0.056832,
      0.051735
    ]
  },
  "paper_results": {
    "stay_time_percent": 1.03,
    "watch_time_percent": 1.22,
    "video_views_percent": 1.73,
    "request_count_percent": 1.57
  },
  "scope": "实际学习两级 residual semantic ID、先生成簇再生成物品，并用偏好/拒绝 slate 的ORPO 风格优势重排；未复刻腾讯私有 PCRQ-VAE、超大码本及线上 beam serving。",
  "schema_version": 2,
  "manifest_ref": "reproduction:higr",
  "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/2512.24787-higr/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"
  }
}