{
  "paper": {
    "arxiv_id": "2608.04455",
    "title": "Multi-Objective Ranking for Live Streaming",
    "url": "https://arxiv.org/abs/2608.04455",
    "organization": "Twitch"
  },
  "dataset": {
    "name": "MovieLens-1M",
    "users": 280,
    "items": 440
  },
  "setup": {
    "seed": 42
  },
  "variants": {
    "single-objective dnn": {
      "hit_at_10": 0.125,
      "ndcg_at_10": 0.06457068803903039,
      "head_share_at_10": 0.12964285714285714,
      "objective_mse": 0.1374373883008957
    },
    "fresh-delayed lifecycle mmoe": {
      "hit_at_10": 0.125,
      "ndcg_at_10": 0.06457068803903039,
      "head_share_at_10": 0.12964285714285714,
      "objective_mse": 0.03130999710029549
    }
  },
  "relative": {
    "hit_at_10_percent": 0.0,
    "ndcg_at_10_percent": 0.0,
    "head_share_at_10_percent": 0.0,
    "objective_mse_percent": 77.21871938387856
  },
  "mechanism": {
    "objectives": 5,
    "experts": 3,
    "parameter_reduction_percent": 41.9
  },
  "paper_results": {
    "dav_percent": 0.09,
    "engaged_arpu_percent": 0.56,
    "follow_percent": 0.27,
    "livefeed_positive_interactions_percent": 1.12
  },
  "scope": "分离即时/延迟目标、生命周期权重和 MMoE gate 均实际计算；本地标签由 MovieLens 行为构造，不等同 Twitch 商业目标。",
  "schema_version": 2,
  "manifest_ref": "reproduction:twitch-mor",
  "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/2608.04455-twitch-mor/metrics/public-seed42.json",
    "historical_migration": "historical-metrics-v2-2026-08-09",
    "original_code_commit": "not recorded",
    "dataset_fingerprint": "not recorded in historical artifact"
  }
}