{
  "date": "2026-07-30",
  "seed": 42,
  "reproductions": {
    "oxygenrec-v2": {
      "dataset": "MovieLens-1M (240 users / 400 items)",
      "baseline": {
        "hit_at_10": 0.0625,
        "ndcg_at_10": 0.028606
      },
      "method": {
        "hit_at_10": 0.025,
        "ndcg_at_10": 0.013132
      },
      "note": "negative transfer under public behavior proxy"
    },
    "asarl": {
      "dataset": "MovieLens-1M (240 users / 400 items)",
      "baseline": {
        "hit_at_10": 0.083333,
        "ndcg_at_10": 0.035985
      },
      "method": {
        "hit_at_10": 0.016667,
        "ndcg_at_10": 0.009818
      },
      "note": "classification loss improves but next-item ranking transfers negatively"
    }
  },
  "post_training": {
    "reco-grpo": {
      "dataset": "gsm8k-candidate (OpenAI official JSONL, 256 train / 64 validation)",
      "baseline_accuracy": 0.171875,
      "final_accuracy": 0.875,
      "baseline_mean_reward": 0.31242,
      "final_mean_reward": 0.879814,
      "rollout_policy_refreshes": 7
    }
  },
  "agent": {
    "cam-df": {
      "benchmark": "scalemcp-mini",
      "joint_success": 1.0,
      "tool_exposure_reduction": 0.510204,
      "cost_aware_stops": 120
    },
    "skillrise": {
      "benchmark": "planbench-mini",
      "joint_success": 1.0,
      "average_cost": 0.655,
      "cross_task_skill_reuses": 119,
      "downstream_credit_updates": 360
    }
  },
  "schema_version": 2,
  "manifest_ref": "experiments:latest-cross-domain-20260730-seed42",
  "evaluation_protocol": {
    "tier": "l1_mechanism",
    "seeds": [
      42
    ],
    "formal_comparison": false,
    "claim_policy": "single/few-seed smoke result; do not claim a stable improvement"
  },
  "provenance": {
    "artifact_path": "docs/experiments/latest-cross-domain-20260730-seed42.json",
    "historical_migration": "historical-metrics-v2-2026-08-09",
    "original_code_commit": "not recorded",
    "dataset_fingerprint": "not recorded in historical artifact"
  }
}