artifacts/source_license_review_v0_3.md

Source license review for v0.3

Review date: 2026-06-16

Scope: candidate sources for a larger, more diverse, more natural Polish DynaWord v0.3. This is a practical engineering review, not legal advice.

Decision table

source	bucket	decision	license evidence	main risk / condition
ashtok897/european-hplt-v1	bulk pretraining web	accept_after_web_review	HF card/license says CC0-1.0, inherited from HPLT v3. The card reports Polish pl: 1,891,358 docs and ~1.98B estimated tokens, with URL, WDS score, language confidence, MIME type, and web-register metadata.	Web-crawl provenance/copyright risk remains; require URL retention, domain filtering, MT filtering, exact/near dedup, and quality/style probes.
PleIAs/common_corpus	bulk pretraining	accept_after_subset_review	Card says Common Corpus contains only uncopyrighted or freely licensed data, document-level contextual/license metadata, and commercial/non-commercial use.	Filter Polish records by license, source/domain, quality, and duplicate overlap.
PleIAs/Polish-PD	bulk pretraining	accept_after_ocr_review	Card says entire collection is public domain in all regions and describes EU public-domain criteria.	Strong OCR-noise risk; sample first, then aggressive OCR filtering.
pelcra/PLLuMIC	final phase / SFT	accept_gated	HF card: CC-BY-SA-4.0, Polish, hand-crafted instructions, professional annotators and review.	Gated; small and instruction-formatted, so not bulk pretraining.
ipipan/polqa	QA/eval/final phase	accept_with_dedup	HF card: CC-BY-SA-4.0; Polish QA with 7,000 questions, evidence passages, and Wikipedia candidate passages.	Wikipedia-heavy; dedup against existing Wikipedia.
clarin-pl/poquad	QA/eval/final phase	accept_with_dedup	HF card tag: CC-BY-4.0, Polish QA.	Small; schema review needed.
clarin-pl/PUGG	QA/eval/final phase	accept_with_dedup	HF card tag: CC-BY-SA-4.0, Polish QA/retrieval.	Dedup and separate eval/final phase bucket.
clarin-pl/ComplexQA	QA/eval	accept_with_dedup	HF card tag: CC-BY-SA-4.0, Polish QA.	Small; eval/final phase only.
openlanguagedata/flores_plus	eval	eval_only	HF card tag: CC-BY-SA-4.0, multilingual including Polish.	Eval/dev sentences only, not pretraining scale.
oscar-corpus/mOSCAR	web fallback	maybe_after_legal_review	HF card tag: CC-BY-4.0.	Web-crawl copyright/provenance risk; require allowlist or source-level filtering plus boilerplate/near-dedup.
oscar-corpus/OSCAR-2301	web fallback	hold	HF tag says CC0-1.0, but card text references research-only license.	Do not use until license conflict is resolved.
WiktorS/polish-news	contemporary news	reject_unless_permission	HF tag says apache-2.0, README says articles obtained from tvp.info.pl.	Upstream TVP Info articles are not shown as Apache/CC/open; TVP has separate licensing/copyright channels.
ptaszynski/PolishCyberbullyingDataset	safety eval	eval_only	HF tag: CC-BY-4.0, Polish.	Toxicity/classification skew; not bulk pretraining.
michaljunczyk/pl-asr-bigos	spoken transcripts	partial_only	HF tag: CC-BY-SA-4.0; card lists mixed upstream licenses.	Includes proprietary/noncommercial-compatible source conditions; use only compatible transcript subsets.
clarin-knext/wsd_polish_datasets	NLP eval/final phase	partial_only	HF tag: CC-BY-4.0; README lists mixed subcorpus licenses including CC-BY-SA, CC-BY, GPL, plWordNet.	Subcorpus-level license review required.
allegro/summarization-polish-summaries-corpus	summarization	reject_until_license	No HF license tag found.	Need upstream rights and redistribution license.
allegro/polish-question-passage-pairs	QA/eval	reject_until_license	No HF license tag found.	Need upstream rights and redistribution license.

TVP Info / WiktorS/polish-news

Decision: blocked for inclusion unless explicit permission or authoritative upstream open-license evidence is obtained.

Evidence checked:

• WiktorS/polish-news README says the dataset contains more than 250k articles obtained from tvp.info.pl.
• HF metadata tags the uploaded dataset as apache-2.0, but that does not establish that TVP Info article text was licensed by TVP under Apache 2.0.
• TVP pages expose Telewizja Polska SA copyright metadata and a separate licencje.tvp.pl licensing channel.
• TVP Stream terms reserve rights to materials and prohibit redistribution outside the granted viewing license. This is not the same service as TVP Info articles, but it is evidence of TVP's general licensing posture for materials.

Operational result: keep WiktorS/polish-news out of the clean open corpus. Revisit only if we can cite a TVP page granting open reuse of tvp.info.pl article text or get permission from TVP.

Import order

1. ashtok897/european-hplt-v1: stream-filter lang=pl, remove machine-translated/high-boilerplate/domain-blacklisted records, keep URL provenance.
2. PleIAs/common_corpus: inspect Polish subset metadata and select natural, non-legal, non-code records with acceptable license values.
3. PleIAs/Polish-PD: sample OCR quality and filter aggressively.
4. pelcra/PLLuMIC: accept gated terms and import as dialogue_sft / final-phase source.
5. ipipan/polqa, clarin-pl/poquad, clarin-pl/PUGG, clarin-pl/ComplexQA: import as QA/eval/final-phase buckets after dedup.
6. oscar-corpus/mOSCAR: only if the above is not enough for modern web diversity and legal review is acceptable.

Required gates before publish

• License evidence per source and, where needed, per subcorpus.
• Exact, normalized, and near-dedup against existing v0.2 data.
• Boilerplate removal for web/news-like data.
• OCR-noise score for public-domain scans.
• Per-source phrase/style contamination report.
• Per-source perplexity probe with small GPT-2 style model.