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{
  "benchmark_overlap": "pending",
  "boilerplate": "lines occurring in >= 1% of documents removed (36 patterns); 11 high-df shingles excluded from near-dedup sketches (df>701 over 35081 sampled docs)",
  "created_field_semantics": "Last revision date from the dump, not the page creation date",
  "cross_source_text_dedup": "pending target integration",
  "exact_dedup": true,
  "language_gate": "independent three-window langid vote",
  "license_gate": "CC BY-SA 3.0 declared on Fandom licensing page (Wayback snapshot 2024-12-31); page-URL attribution; third-party notices still require review",
  "license_terms_url": "https://creativecommons.org/licenses/by-sa/3.0/",
  "limitations": [
    "fan-fiction and gaming wiki register: lore, walkthroughs, guides, infobox-heavy content; not factual reference text",
    "pages may quote/copy official game materials or other copyrighted works; quoted passages are not guaranteed disjoint from other shards",
    "record model is a whole content page; individual sections are not split",
    "pattern checks are not comprehensive de-identification"
  ],
  "minimum_final_text_characters": 500,
  "near_dedup": "deterministic capped 5-word-shingle hash Jaccard >= 0.90 within source; shingles with document frequency >2% (sampled 1-in-4) excluded from sketches",
  "pii_limitations": "Unlabelled national identifiers, free-form phone numbers, names and personal disclosures may remain; this is not complete anonymization",
  "pii_pattern_matches": {
    "account_candidate": 259,
    "email": 44,
    "ipv4": 89,
    "ipv6": 3,
    "ipv6_legacy_pattern": 1,
    "labelled_phone": 0,
    "national_identifier": 0
  },
  "pii_policy": "IPv6 parsed including compressed notation; labelled PESEL/NIP/REGON and 26-digit account candidates masked conservatively without checksum validation; counts cover all candidates before rejection",
  "rejection_counts": {
    "low_letter_ratio": 20,
    "near_duplicate": 224,
    "non_polish_text": 1581,
    "normalized_duplicate": 6,
    "too_little_text": 87839
  },
  "scope": "Polish Fandom wikis (12 wikis, ns0 articles only), latest revision per page fetched via MediaWiki API",
  "wikipedia_shard_overlap": {
    "candidate_records": 92000,
    "collision_count": 0,
    "id_collisions": [],
    "method": "Literal dataset-record ID comparison only. Source-specific ID prefixes make zero collisions uninformative about page identity or text overlap. No target namespace or text audit was performed.",
    "observed_at": "2026-10-02T18:28:14.958346+00:00",
    "target": "SlayerLab/polish-dynaword:data/wikipedia",
    "target_revision": "014faa53b3ebe2a8c08d21b71fcbb221bc551bd1",
    "target_rows": 1171897,
    "text_overlap": "not tested; quoted-article passages and target-wide text dedup remain integration gates"
  }
}