# wiktionary_examples

Polish Wiktionary usage examples

## Dataset description
- **Source (upstream):** https://dumps.wikimedia.org/plwiktionary/20261001/
- **Domain:** lexicographic
- **Language:** Polish (pl)
- **License:** `CC-BY-SA-4.0`
- **Created (range):** 2004-03-22, 2026-10-01
- **Added:** 2026-07-19; rebuilt 2026-10-05 without quoted third-party text

## Licensing — traceable basis
Wiktionary contributors license their text under CC BY-SA 4.0: the Wikimedia
[Terms of Use](https://foundation.wikimedia.org/wiki/Policy:Terms_of_Use) (read
2026-10-05) and the pl.wiktionary footer, which links
`creativecommons.org/licenses/by-sa/4.0/deed.pl`. Text contributed before June 2023
was under CC BY-SA 3.0, which allows an adaptation under a later version (3.0 §4(b)).
v0.2.5 labelled the source `CC-BY-SA-3.0`; this release labels it `CC-BY-SA-4.0`.

Not every example sentence is contributor text. Many are quotations from books,
press, the NKJP corpus, the web or Wikipedia, used on Wiktionary under the quotation
right (Art. 29 of the Polish copyright act). That right does not pass to a corpus,
and the CC BY-SA grant does not cover them. The fetcher drops them:

| line | lines | released |
|---|---:|---|
| carries `{{źródło}}` or a `<ref>` | 32,664 | no |
| names its source by hand, e.g. "(B. Prus: Lalka)", "(z Internetu)", "(Wikipedia)", "(Mt 4:19)", or is an excerpt marked "(…)" / "[…]" | 319 | no |
| shorter than 10 characters | 50 | no |
| contributor's own example | 45,212 | yes, if its entry reaches 200 characters |

The hand-attribution patterns come from a survey of the dump and also drop a few
lines that end in a Latin gloss in parentheses. Quotations pasted with no source
marker cannot be detected and may remain.

To measure them, 100 random released lines (of 7,749; `random.seed(20261005)`) were
searched on the web as exact phrases on 2026-10-05:

| result | lines |
|---|---:|
| found only on Wiktionary or sites that republish it | 44 |
| not found | 41 |
| too short or common for a match to mean copying | 13 |
| found elsewhere, copied *from* Wiktionary (2017 forum post; on Wiktionary since 2007) | 1 |
| paraphrase of a 2014 news quote, not verbatim | 1 |
| copied from another source | **0** |

0 of 100 puts the share of unmarked quotations below 3.7% (95%, Wilson). Printed or
paywalled sources that search engines do not index cannot match. Per line:
`wiktionary_examples.quotation-sample.jsonl`. The source is kept (decided 2026-10-05).

Evidence: `wiktionary_examples.license-evidence.json`.

## Attribution
Each row's `author` is `Wikisłownik contributors, <page URL>`, e.g.
`https://pl.wiktionary.org/wiki/czyta%C4%87`. The page history names the
contributors; CC BY-SA 4.0 §3(a)(2) allows attribution by a URI. The row `id` is
`wiktionary_examples_<page id>`.

## Provenance
Parsed from the official Wikimedia dump `plwiktionary-20261001-pages-articles.xml.bz2`
(sha1 `a097f6e2b005d1235936a19ed8e800e29a6f2fad`) by `src/fetch_wiktionary_examples.py`;
not routed through SpeakLeash. One document per Polish-language headword: the lines of
its `{{przykłady}}` section, in source order. The fetcher also writes
`wiktionary_examples.citations.jsonl` (not part of the corpus) listing, per entry, the
sources of the dropped lines.

869,406 pages scanned → 116,157 Polish entries → 31,094 with at least one kept example
→ 1,829 at 200 characters or more → 1,818 after deduplication.

## Statistics
| documents | characters | tokens (tiktoken proxy) |
|---:|---:|---:|
| 1,818 | 534,521 | 207,181 |

v0.2.5 had 8,639 documents (2,889,761 characters). Most of the drop comes from the
200-character document gate: removing the quotations leaves most entries with one or
two short examples. The gate is kept (decided 2026-10-05).

## Per-document license metadata
| license | documents |
|---|---:|
| `CC-BY-SA-4.0` | 1,818 |

Author metadata present for **1,818** documents.

## Filters applied (build_dynaword.py)
- drop documents < 200 chars: **0** (the fetcher applies the same gate: 29,265 entries)
- drop non-Polish (diacritic ratio): **0**
- exact cross-source dedup (sha1): **11**
- OCR alpha-ratio < 0.70 (OCR sources only): **0**
- read 1,829 → kept 1,818

Token counts are a fast tiktoken (cl100k) proxy (~1% off Llama-3); the canonical
Llama-3 count is computed at release.

## Not checked
- quotations pasted without any source marker beyond the 100-line web sample above
- whether an example paraphrases a protected text
- the 3.0 → 4.0 relabel of pre-2023 text (reading of 3.0 §4(b), not a lawyer's opinion)
- personal data in example sentences (the NERGAL scrub runs before release)