{
  "paper": "2607.28627",
  "dataset": "WikiText-2",
  "seed": 42,
  "steps_per_variant": 30,
  "device": "mps",
  "baseline": {
    "architecture": "llama_modern",
    "lm_loss": 5.7470526695251465,
    "perplexity": 313.2659998869641,
    "parameters": 139584
  },
  "method": {
    "architecture": "retoken",
    "lm_loss": 5.783392608165741,
    "perplexity": 324.85944379938337,
    "parameters": 140224,
    "retrieval_target_tokens": 1,
    "causal_cache_keep_rate": 0.747911661863327
  },
  "relative": {
    "lm_loss_percent": 0.6323230485304929,
    "perplexity_percent": 3.700830577401487
  },
  "scope": "text-cache core-mechanism reproduction; not a VLM benchmark reproduction",
  "schema_version": 2,
  "manifest_ref": "reproduction:retoken",
  "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/2607.28627-retoken/metrics/wikitext2-seed42.json",
    "historical_migration": "historical-metrics-v2-2026-08-09",
    "original_code_commit": "not recorded",
    "dataset_fingerprint": "not recorded in historical artifact"
  }
}