{
  "paper": {
    "arxiv_id": "2608.02738",
    "title": "KGD",
    "url": "https://arxiv.org/abs/2608.02738",
    "organization": "Xiamen University / Shopee"
  },
  "dataset": {
    "name": "MovieLens-1M",
    "users": 280,
    "items": 440
  },
  "setup": {
    "seed": 42
  },
  "variants": {
    "adjacent ntp transfer": {
      "hit_at_10": 0.25,
      "ndcg_at_10": 0.14838729507481513,
      "head_share_at_10": 0.17035714285714285
    },
    "kgd bmtp + read-only transfer + acr": {
      "hit_at_10": 0.26785714285714285,
      "ndcg_at_10": 0.13113418430962984,
      "head_share_at_10": 0.09464285714285714
    }
  },
  "relative": {
    "hit_at_10_percent": 7.14285714285714,
    "ndcg_at_10_percent": -11.627080847107885,
    "head_share_at_10_percent": -44.44444444444444
  },
  "mechanism": {
    "bmtp_horizon": 4,
    "knowledge_rank": 16,
    "acr_anchor_dot": 3.0296058433430173e-18
  },
  "paper_results": {
    "gmv_per_user_percent": 1.75,
    "advertising_revenue_percent": 1.53
  },
  "scope": "BMTP、冻结知识编码、只读 transfer 与正交 ACR 均实际执行；未复刻 Shopee 流式日志和生产刷新服务。",
  "schema_version": 2,
  "manifest_ref": "reproduction:kgd",
  "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/2608.02738-kgd/metrics/public-seed42.json",
    "historical_migration": "historical-metrics-v2-2026-08-09",
    "original_code_commit": "not recorded",
    "dataset_fingerprint": "not recorded in historical artifact"
  }
}