{
  "schema_version": 2,
  "manifest_ref": "reproductions:grp",
  "method": "grp",
  "dataset": "deterministic public mechanism mini-suite",
  "seeds": [
    42,
    43,
    44
  ],
  "diagnostic_only": true,
  "metrics": {
    "ranker_candidate_variance": {
      "mean": 0.047520979618032776,
      "std": 0.02197686122892434
    },
    "recall_guard": {
      "mean": 0.03333334997296333,
      "std": 0.0
    }
  },
  "seed_results": [
    {
      "seed": 42,
      "independent_blocks": true,
      "ranker_candidate_variance": 0.05029730871319771,
      "generation_gradient_finite": true,
      "policy_gradient_finite": true,
      "recall_guard": 0.03333334997296333
    },
    {
      "seed": 43,
      "independent_blocks": true,
      "ranker_candidate_variance": 0.07294125854969025,
      "generation_gradient_finite": true,
      "policy_gradient_finite": true,
      "recall_guard": 0.03333334997296333
    },
    {
      "seed": 44,
      "independent_blocks": true,
      "ranker_candidate_variance": 0.019324371591210365,
      "generation_gradient_finite": true,
      "policy_gradient_finite": true,
      "recall_guard": 0.03333334997296333
    }
  ],
  "evaluation_protocol": {
    "tier": "l1_mechanism",
    "seeds": [
      42,
      43,
      44
    ],
    "formal_comparison": false,
    "diagnostic_only": true,
    "claim_policy": "executable mechanism and invariant checks only"
  },
  "provenance": {
    "artifact_path": "docs/reproductions/2609.36688-grp/metrics/mechanism-seeds42-44.json",
    "dataset_fingerprint": "deterministic public mechanism suite sep30-followup-v1",
    "original_code_commit": "working tree"
  }
}