{
  "schema": "simpleqa-reference-revision/1",
  "root_cause": "Literal URL matching missed copies of the same article. Added URLs derive from publisher references and require matching observed titles and original lead text.",
  "regression_ids": [
    "generic-document-urls",
    "reference-mirror-title-and-lead"
  ],
  "provider_calls": 0,
  "source_tooling_revision": "c8c21bd8e2654107d602cd31a89b4719369f11ed",
  "source_dataset_revision": "bd2a330cf45b4f8ab77f8b9111c50c2faa01cc75",
  "before_dataset_sha256": "b3422267e0be4a68b71e533356e14531b6aba1d2e57ccde962e6e3e00327d253",
  "after_dataset_sha256": "41e36f3e5f8c954192b6ecbd6f8b5a6bc86cd1950c79eafb89d0a96c3aa4f536",
  "policy": {
    "method": "reference-title-lead/1",
    "minimum_lead_characters": 200,
    "maximum_lead_characters": 4000,
    "minimum_block_overlap": 0.8,
    "candidate_scope": "Publisher reference URLs only",
    "url_policy": "document-url/2"
  },
  "evidence": {
    "input_cases": 831,
    "reference_url_count": 2451,
    "observed_urls": 3209,
    "available_pages": 1987,
    "with_article_lead": 1981,
    "qualified_aliases": 691,
    "cases_with_aliases": 474,
    "observed_capture_cost_usd": 1.987,
    "transport_cost_unknown_batches": 1,
    "observations_sha256": "c953bfda568ecdef261e2087caaf24104be8dc7fc246dcc485116be26921d2cb",
    "extended_dataset_sha256": "41e36f3e5f8c954192b6ecbd6f8b5a6bc86cd1950c79eafb89d0a96c3aa4f536"
  },
  "capture_contracts_sha256": [
    "1e4065df58e290843fd5b1831cdc5d48e3c80a7186c24a92247061cb683c8dce",
    "4211ff68079835382a8a2a157a1bdba1e8635c0c2235018b8ac1262922489800"
  ]
}