{
  "seed": 42,
  "dataset": "WikiText-2",
  "steps": 30,
  "baseline": {
    "lm_loss": 5.7470526695,
    "perplexity": 313.265999887,
    "parameters": 139584
  },
  "method": {
    "lm_loss": 5.7551166266,
    "perplexity": 315.80237634,
    "parameters": 141120,
    "active_attention_head_fraction": 0.5,
    "active_ffn_channel_fraction": 0.5
  },
  "relative_perplexity_percent": 0.809655837,
  "fidelity": "core mechanism; dense PyTorch kernel",
  "schema_version": 2,
  "manifest_ref": "reproduction:wide",
  "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/2607.28418-wide/metrics/wikitext2-seed42.json",
    "historical_migration": "historical-metrics-v2-2026-08-09",
    "original_code_commit": "not recorded",
    "dataset_fingerprint": "not recorded in historical artifact"
  }
}