{
  "paper": {
    "title": "SIM: Search-based Interest Model"
  },
  "dataset": {
    "name": "MovieLens 100K",
    "users": 260,
    "items": 420
  },
  "setup": {
    "adapter": "sim",
    "same_split_and_candidates": true
  },
  "baseline": {
    "name": "shared transition + content baseline",
    "hit_at_10": 0.08846153846153847,
    "ndcg_at_10": 0.03539806521543129,
    "fresh_hit_at_10": 0.027777777777777776,
    "head_share_at_10": 0.29384615384615387
  },
  "method": {
    "name": "SIM",
    "hit_at_10": 0.09615384615384616,
    "ndcg_at_10": 0.047068472530034856,
    "fresh_hit_at_10": 0.027777777777777776,
    "head_share_at_10": 0.22423076923076923
  },
  "relative": {
    "hit_at_10_percent": 8.695652173913043,
    "ndcg_at_10_percent": 32.96905422253422,
    "fresh_hit_at_10_percent": 0.0,
    "head_share_at_10_percent": -23.691099476439796
  },
  "stages": {
    "candidate_conditioned_gsu": true,
    "retrieved_behaviours": 24,
    "exact_search_attention": true,
    "paper_maximum_history": 54000,
    "validation_selected_alpha": 0.1,
    "validation": {
      "hit_at_10": 0.12692307692307692,
      "ndcg_at_10": 0.06375817235110247,
      "fresh_hit_at_10": 0.06,
      "head_share_at_10": 0.24384615384615385
    }
  },
  "paper_results": {
    "ctr_percent": 7.1,
    "rpm_percent": 4.4,
    "deployment": "main traffic"
  },
  "scope": "在 MovieLens-100K 全库排序上执行论文的候选相关检索、层级压缩或蒸馏目标；未使用公司私有日志与线上 serving，线上 A/B 只引用原文。",
  "schema_version": 2,
  "manifest_ref": "reproduction:sim",
  "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/2006.05639-sim/metrics/public-seed42.json",
    "historical_migration": "historical-metrics-v2-2026-08-09",
    "original_code_commit": "not recorded",
    "dataset_fingerprint": "not recorded in historical artifact"
  }
}