{
  "dataset": {
    "name": "WikiText-2 raw UTF-8 bytes",
    "train_bytes": 10797148,
    "test_bytes": 1256449
  },
  "setup": {
    "seed": 42,
    "steps_per_model": 120,
    "sequence_length": 256,
    "block_size": 32,
    "parameters": 132032
  },
  "bits_per_byte": {
    "dense": 5.081886199285811,
    "bigbird": 5.0613776694632735,
    "gzip": 5.112921070573283
  },
  "relative_percent": {
    "gzip_vs_bigbird_bpb_reduction": -1.0183670232906294,
    "gzip_vs_dense_bpb_reduction": -0.610695912313698
  },
  "sample_edge_reduction_percent": 70.8171206225681,
  "schema_version": 2,
  "manifest_ref": "reproduction:gzip-sparse-attention",
  "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/2607.21752-gzip-sparse-attention/metrics/wikitext-2-byte-seed42.json",
    "historical_migration": "historical-metrics-v2-2026-08-09",
    "original_code_commit": "not recorded",
    "dataset_fingerprint": "not recorded in historical artifact"
  }
}