{
  "paper": {
    "title": "RecHarness"
  },
  "dataset": {
    "name": "MovieLens 100K",
    "users": 220,
    "items": 360
  },
  "setup": {
    "adapter": "recharness",
    "same_split_and_candidates": true
  },
  "baseline": {
    "name": "shared transition + content baseline",
    "hit_at_10": 0.10909090909090909,
    "ndcg_at_10": 0.05400546778896325,
    "fresh_hit_at_10": 0.031746031746031744,
    "head_share_at_10": 0.23772727272727273
  },
  "method": {
    "name": "RecHarness",
    "hit_at_10": 0.1,
    "ndcg_at_10": 0.04913217770341868,
    "fresh_hit_at_10": 0.031746031746031744,
    "head_share_at_10": 0.1740909090909091
  },
  "relative": {
    "hit_at_10_percent": -8.333333333333325,
    "ndcg_at_10_percent": -9.023697571860486,
    "fresh_hit_at_10_percent": 0.0,
    "head_share_at_10_percent": -26.768642447418735
  },
  "stages": {
    "mechanism": {
      "mode": "recharness",
      "fitted": true,
      "state_keys": [
        "arm_reward",
        "arms",
        "counts",
        "domain_eye",
        "fitted"
      ]
    },
    "validation_selected_alpha": 0.2,
    "validation": {
      "hit_at_10": 0.1409090909090909,
      "ndcg_at_10": 0.06696808511676272,
      "fresh_hit_at_10": 0.08771929824561403,
      "head_share_at_10": 0.17909090909090908
    }
  },
  "paper_results": {
    "advv_percent": 2.084,
    "revenue_percent": 0.534,
    "exposure_percent": 0.559
  },
  "scope": "在 MovieLens-100K 固定全库候选、相同切分和 seed 上执行论文核心机制；公司私有特征、生产基础模型与在线流量不可公开，论文 A/B 数字仅作原文引用。",
  "schema_version": 2,
  "manifest_ref": "reproduction:recharness",
  "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/2607.29241-recharness/metrics/public-seed42.json",
    "historical_migration": "historical-metrics-v2-2026-08-09",
    "original_code_commit": "not recorded",
    "dataset_fingerprint": "not recorded in historical artifact"
  }
}