PiotrSty/cswikisource-literature-czech

Czech Wikisource literature (cswikisource_literature) - classics, translations, encyclopedic works

Czech literature and reference texts (Wikizdroje, Czech Wikisource, namespace 0, non-redirect) from the pinned cswikisource pages-meta-current dump (2026-10-01): classics (Neruda, Jirásek, Hašek, Čapek), translations (e.g. Don Quijote), encyclopedic and dictionary works, public speeches and historical documents.

• Source pages: 58,112 retained from 92,646 dump pages (all namespaces)
• Retained records: 39,496 (67.9% of content pages)
• Measured cl100k_base proxy tokens: 81,133,114
• Characters: 172,200,065
• Time span (revision dates): 2010-10-16 - 2026-10-01
• Source snapshot: cswikisource-latest-pages-meta-current.xml.bz2 (91,990,530 bytes, md5 050313c569c1ff86fb43d3feac31c49c - verified against publisher md5sums; dumps index https://dumps.wikimedia.org/cswikisource/latest/)

License - evidence at the origin

• Wiki-layer license: CC BY-SA 4.0 - verbatim siteinfo rightsinfo: "Creative Commons Attribution-Share Alike 4.0" (https://cs.wikisource.org/w/api.php?action=query&meta=siteinfo&siprop=rightsinfo, checked 2026-10-07). Per-record license field: CC-BY-SA-4.0.
• Underlying works are hosted as public domain (Czech classics, author death + 70) or free-licensed texts; per-work status remains a review item [INFERENCE: Wikisource hosting policy, not per-work counsel-verified]. release: None until the review ruling (same policy as legal-sk and justicecorp-sk).
• Per-record provenance in artifacts/attribution.jsonl.gz: page id, title, source URL (https://cs.wikisource.org/wiki/<title>), revision date and text_sha256.

Samples

Verbatim records from artifacts/sample.jsonl, truncated with [...].

Sample 1 (obituary notice, 1918 press)

id: cswikisource_literature_62558
source: cswikisource_literature
created: 2020-01-23
token_count: 315

Úmrtí. Dne 16. října t. r. zemřel v Olomouci profesor české reálky, ředitel dívčího ref. reál. gymnasia v Olomouci Jindřich . Narodil se r. 1887 v Oplocanech u Tovačova. Působil na českém gymnasiu v O [...]

Sample 2 (translated classic - Don Quijote)

id: cswikisource_literature_21165
source: cswikisource_literature
created: 2026-09-23
token_count: 9201

Cide Hamete Benengeli, arabský a mancheský spisovatel, vypravuje v této převážné, veleslavné, roztomilé, utěšené a důvtipné historii, že po oné ku konci dvacáté první kapitoly pověděné rozmluvě slovut [...]

Sample 3 (encyclopedic entry)

id: cswikisource_literature_43509
source: cswikisource_literature
created: 2026-04-14
token_count: 1900

Aequivalent (z lat.), , nazývá se vůbec částka ustanovená jakožto náhrada za věc zcizenou, zhoršenou nebo za věc, která by v jiné způsobě měla býti poskytnuta; pak jako výkupné za nějaký požadavek. Ve [...]

Filtering

From the pages-meta-current dump: namespace 0 only, redirect pages skipped (<redirect/> element), latest revision per page; wikitext stripped with mwparserfromhell (strip_code(normalize, collapse)) after raw-level removal of galleries, file/image links (Soubor:/File:/Image:/Media:), interwiki links and category lines (Kategorie:).

Rejections (18,616 records, one final decision per record in artifacts/decisions.jsonl.gz):

{
  "low_letter_ratio": 79,
  "near_duplicate": 20,
  "non_czech_text": 313,
  "normalized_duplicate": 18,
  "too_little_text": 18182,
  "too_little_text_after_redaction": 4
}

Minimum final text is 200 characters (short poems and dictionary stubs must survive). Language gate: langid == cs on the first 1000 characters.

PII redaction (redact_pii() in the builder): labelled patterns only - e-mail, labelled phone, labelled IP address ("IP adresa"), labelled national identifier ("rodné číslo"), CZ IBAN candidates. Pattern counts: 3 e-mail, 1 labelled phone, 0 everything else. Residual pattern documents after redaction: 0 across all patterns. Bare dotted quads are content and are deliberately not redacted.

Layout filter (drop_layout_lines()): bullet-only lines and page fractions (577 line instances removed). Boilerplate: lines with document frequency above 395 (1% of gated documents) dropped (1,545 line instances removed).

Deduplication: exact dedup on 128-bit truncated sha256; near dedup with Jaccard >= 0.90 on capped 25 x 5-word shingle sets (first-owner-per-shingle majority vote candidates, >= 20 shared shingles). Records sharing a source id are rejected as duplicate_id (first occurrence wins).

Known limitations

• Mixed literary and reference register: novels, poems, translations, encyclopedic/dictionary entries, press excerpts and speeches.
• Wikitext stripping leaves occasional layout fragments and proofreading markup notes.
• Per-work copyright status of underlying texts is a review item (hosted as PD/free per Wikisource, not per-work counsel-verified).
• created is the latest revision date of the source page.

See artifacts/ for attribution, per-record decisions, QA counts, samples and checksums. verify() passes: 39,496 rows, unique IDs, token counts recomputed and text_sha256 re-checked against the emitted text. Tests: 9 (pytest).