{
  "paper": {
    "arxiv_id": "2608.09408",
    "title": "DREAM",
    "url": "https://arxiv.org/abs/2608.09408",
    "organization": "Taobao & Tmall Group / Alibaba"
  },
  "dataset": {
    "name": "MovieLens-1M",
    "users": 260,
    "items": 420
  },
  "setup": {
    "seed": 42,
    "offline_generations": 3,
    "evaluated_strategy_bundles": 41,
    "offline_replay_users": 130,
    "online_shadow_users": 130,
    "test_frozen_after_validation": true
  },
  "baseline": {
    "name": "retrieval/ranking backbone without DREAM overlay",
    "hit_at_10": 0.08846153846153847,
    "ndcg_at_10": 0.03539806521543129,
    "fresh_hit_at_10": 0.027777777777777776,
    "head_share_at_10": 0.29384615384615387
  },
  "method": {
    "name": "DREAM intent + meta strategy overlay",
    "hit_at_10": 0.1,
    "ndcg_at_10": 0.04932940180854383,
    "fresh_hit_at_10": 0.013888888888888888,
    "head_share_at_10": 0.5711538461538461
  },
  "relative": {
    "hit_at_10_percent": 13.043478260869566,
    "ndcg_at_10_percent": 39.356209183544216,
    "fresh_hit_at_10_percent": -50.0,
    "head_share_at_10_percent": 94.37172774869107
  },
  "stages": {
    "l0_l1_l2_intent_engine": true,
    "edge_cloud_traffic_funnel": true,
    "m1_intent_summary": true,
    "m2_strategy_memory_planning": true,
    "m3_schema_guarded_compiler": true,
    "offline_online_reward_dual_loop": true,
    "selected_strategy": {
      "relevance": -2,
      "affinity": 0,
      "novelty": 0,
      "exploration": 1,
      "scatter": 0,
      "fatigue": 0
    },
    "memory_positive_conclusions": 3,
    "memory_rejected_conclusions": 0,
    "cloud_trigger_share": 0.7769230769230769,
    "schema_valid_rate": 1.0
  },
  "paper_results": {
    "intent_model_overall_baseline": 71.32,
    "intent_model_overall_dream": 84.74,
    "rerank_ipv_percent": 2.06,
    "fine_rank_rerank_ipv_percent": 2.71,
    "fine_rank_rerank_core_ipv_percent": 3.06,
    "fine_rank_rerank_gmv_percent": 1.31,
    "cognitive_recall_ipv_percent": 0.8,
    "strategy_adaptation_ipv_percent": 0.52
  },
  "scope": "在公开 MovieLens-1M 上保留原排序 backbone，实际执行 L0/L1/L2 意图抽取、流量漏斗、策略记忆、三轮离线 replay、typed bundle 安全校验、有界乘法编译与类目打散，并在验证集冻结策略后评估测试集；未复刻淘宝私有多源信号、Qwen3 Meta Engine 和线上结论回流。",
  "schema_version": 2,
  "manifest_ref": "reproduction:dream",
  "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/2608.09408-dream/metrics/movielens1m-seed42.json",
    "historical_migration": "historical-metrics-v2-2026-08-09",
    "original_code_commit": "not recorded",
    "dataset_fingerprint": "not recorded in historical artifact"
  }
}