{
  "paper": {
    "arxiv_id": "2607.25404",
    "title": "TWICE: Two-Clock, Two-Window Learning for Long-Horizon Conversion Prediction in Online Advertising",
    "url": "https://arxiv.org/abs/2607.25404",
    "organization": "Kuaishou"
  },
  "dataset": {
    "name": "MovieLens 100K",
    "users": 420,
    "items": 620
  },
  "setup": {
    "adapter": "twice",
    "same_split_and_candidates": true
  },
  "baseline": {
    "name": "mature-label next-item conversion proxy",
    "hit_at_10": 0.05952380952380952,
    "ndcg_at_10": 0.026292301768631662,
    "fresh_hit_at_10": 0.020833333333333332,
    "head_share_at_10": 0.48333333333333334
  },
  "method": {
    "name": "two-clock current-status CVR + monotone delay CDF",
    "hit_at_10": 0.06428571428571428,
    "ndcg_at_10": 0.030053745508071446,
    "fresh_hit_at_10": 0.010416666666666666,
    "head_share_at_10": 0.7964285714285714
  },
  "relative": {
    "hit_at_10_percent": 7.999999999999996,
    "ndcg_at_10_percent": 14.3062550115997,
    "fresh_hit_at_10_percent": -49.99999999999999,
    "head_share_at_10_percent": 64.7783251231527
  },
  "stages": {
    "click_clock_current_status": true,
    "conversion_clock_delay_bins": [
      1,
      2,
      3,
      4,
      5,
      6,
      7
    ],
    "shared_monotone_cdf": true,
    "cohort_exposure_weighting": "fixed click-time pCVR mass proxy",
    "minimum_cdf_increment": 0.04064125827789211,
    "selected_validation_blend": 0.2,
    "validation_only_model_selection": {
      "hit_at_10": 0.11904761904761904,
      "ndcg_at_10": 0.06154754526894145,
      "fresh_hit_at_10": 0.013333333333333334,
      "head_share_at_10": 0.795
    }
  },
  "paper_results": {
    "expected_revenue_percent": 2.486,
    "revenue_percent": 1.858,
    "conversions_percent": 2.061,
    "full_traffic": true
  },
  "scope": "实际分离 click/conversion clocks，学习目标窗 CVR 与单调 elapsed-delay CDF，并按 cohort exposure 聚合；MovieLens 行为时间代理广告点击和延迟转化。",
  "schema_version": 2,
  "manifest_ref": "reproduction:twice",
  "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/2607.25404-twice/metrics/result-seed42.json",
    "historical_migration": "historical-metrics-v2-2026-08-09",
    "original_code_commit": "not recorded",
    "dataset_fingerprint": "not recorded in historical artifact"
  }
}