artifacts/source_scouting_v0_3.md

Source scouting for Polish DynaWord v0.3

Goal: improve training quality by adding contemporary, diverse Polish while keeping traceable licensing.

Strong candidates

candidate	type	license/status	why useful	action
ashtok897/european-hplt-v1	high-quality European web crawl	CC0-1.0 per HF card, inherited from HPLT v3; web-crawl caveat	strongest current candidate for modern/natural Polish: ~1.89M PL docs / ~1.98B estimated PL tokens, URL + score + register metadata	stream-filter pl, exclude MT, spam, boilerplate, legalish, domain-blacklisted records; keep URL provenance
PleIAs/common_corpus	multilingual open corpus	open/traceable per card	large Polish component, diverse domains, provenance-oriented	inspect Polish subset metadata, dedup against existing data
PleIAs/Polish-PD	Polish public-domain books/newspapers	public-domain collection, license must be verified per card/source	large, traceable cultural/news-ish historical text; already separate Polish subset	sample OCR quality before inclusion
pelcra/PLLuMIC	Polish instruction/dialogue	CC-BY-SA-4.0, gated	high-quality hand-crafted Polish instructions/dialogues	use for SFT/final quality phase, not bulk pretraining
ipipan/polqa	Polish QA + passages	CC-BY-SA-4.0	real QA style, manually labeled evidence passages, large candidate passage corpus	use for QA/eval/high-quality mix; avoid duplicate Wikipedia-heavy passages
clarin-pl/poquad	Polish QA	CC-BY-4.0	native Polish QA, useful for eval and final phase	add as QA-style source after dedup
clarin-pl/PUGG	Polish QA/retrieval	CC-BY-SA-4.0	natural questions + retrieval/MRC variants	use for eval/final phase
clarin-pl/ComplexQA	Polish complex QA	CC-BY-SA-4.0	small but useful complex-question evaluation	eval/final phase
openlanguagedata/flores_plus	translation/dev sentences	CC-BY-SA-4.0, gated	clean multilingual Polish sentence set	eval only or very small high-quality mix

Possible candidates, needs review

candidate	type	license/status	concern	action
oscar-corpus/OSCAR-2301	Common Crawl web	HF tag says CC0-1.0, gated/manual; card text mentions research-only license	legal/copyright ambiguity despite useful web scale	use only after license review and heavy filtering
oscar-corpus/mOSCAR	multilingual web	CC-BY-4.0	web crawl copyright and boilerplate risk	possible fallback with allowlist/blocklist + near-dedup
WiktorS/polish-news	Polish news from tvp.info.pl	HF tag says apache-2.0	upstream TVP Info article rights are not shown as Apache/CC/open; TVP has copyright/licensing pages	reject unless explicit TVP permission or upstream open-license evidence is obtained
ptaszynski/PolishCyberbullyingDataset	Polish social/media examples	CC-BY-4.0	classification dataset, toxicity/safety skew	eval/safety only, not bulk pretraining
michaljunczyk/pl-asr-bigos	Polish ASR transcripts	CC-BY-SA-4.0, gated	mixed upstream licenses; speech transcript style	only transcript subset with compatible upstream licenses
clarin-knext/wsd_polish_datasets	Polish WSD text/sentences	CC-BY-4.0	annotated NLP data, may be sentence fragments	small final/eval source after schema review
allegro/summarization-polish-summaries-corpus	Polish summaries	missing HF license	source/license unclear	hold until license provenance is documented
allegro/polish-question-passage-pairs	Polish Q/passages	missing HF license	source/license unclear	hold until license provenance is documented

Reject or avoid for clean pretraining

candidate	reason
pelcra/PLLuMIC-syn-ext	synthetic extension; useful for SFT experiments, not clean human-text pretraining
random *-forum-polish HF datasets	mostly no license, tiny, likely scraped student datasets
PLLuMIC as bulk text	high quality but too small and instruction-formatted; do not treat as web text
extra Wikipedia mirrors	already covered; only use if needed for validation, not diversity
subtitles/movie dialogue	copyright derivative risk
CC-BY-NC-* / NC datasets	not compatible with the current open commercial-friendly curation stance

Next import order

1. Filter ashtok897/european-hplt-v1 Polish web records with src/filter_european_hplt.py.
2. Inspect and sample PleIAs/common_corpus Polish records.
3. Inspect and sample PleIAs/Polish-PD; measure OCR garbage and duplicate overlap.
4. Add pelcra/PLLuMIC as dialogue_sft / high-quality final-phase source after accepting HF access terms.
5. Add QA/eval buckets from ipipan/polqa, clarin-pl/poquad, clarin-pl/PUGG, clarin-pl/ComplexQA.
6. Review WiktorS/polish-news provenance before considering contemporary news.
7. Treat OSCAR/mOSCAR as fallback web source only after license review, boilerplate removal, language filtering, URL/domain filtering, and near-dedup.

TVP Info review note

WiktorS/polish-news should not be imported into Polish DynaWord v0.3 based only on the HF apache-2.0 tag. The dataset README says it contains articles obtained from tvp.info.pl, but the upstream TVP/TVP Info pages checked during review did not expose an Apache, Creative Commons, CC0, public-domain, or equivalent open license for article reuse. TVP also maintains a separate licencje.tvp.pl licensing channel, and TVP Stream terms reserve rights to materials and prohibit redistribution of materials outside the granted viewing license. Treat the dataset as blocked unless TVP grants explicit permission or an authoritative upstream open-license page is found.

Filters required before inclusion

• Exact and normalized-text dedup.
• Near-dedup with MinHash/LSH or equivalent.
• Boilerplate removal for web/news/forum sources.
• Per-source perplexity with a small GPT-2 probe.
• Style contamination rates for legal/parliamentary markers.
• Per-source token caps and sqrt/temperature sampling.