ukvocab

The published Ukrainian vocabulary data from jakelawrence.xyz/research/ukrainian-frequency, installable and offline: the top-12,000 lemma frequency list over UberText 2.0, the validated PULS CEFR overlay (A1 to C1), the Borodin A1 and A2 lexical minimums, the crosswalk between the minimums and the profile, and the B1 enrichment tables (aspect relations, case government, collocations).

import ukvocab
ukvocab.lookup("п'ять")["level"]                       # 'A1', with rank, source and enrichment beside it
ukvocab.coverage(["в", "школа", "йти"], "A2")["coverage"]  # share of tokens a validated-A2 learner knows

What you get

Every return value carries the dataset, version and snapshot it came from. Data is Parquet, loaded lazily on first use, never on import. The only dependency is pyarrow.

Two things the package does not do, on purpose. It does not lemmatize: pass lemmas in the UberText / VESUM convention (infinitive for verbs, nominative singular for nouns); the site's POST /api/lemmatize is the hosted lemmatizer matched to this list. And it ships no predicted CEFR levels: only the profile's validated levels are here, and a lemma the profile does not cover gets level: None rather than a guess.

Provenance and honesty

The data tier is generated from the site's published download files by scripts/ukrainian-frequency/build-package.py in the source repository and is never edited by hand; the tests assert that every table's row count and hash match the published file exactly. sources() is the manifest that build wrote. The PULS overlay is a dated snapshot (2026-07-23) of a profile that is still being extended, redistributed with its authors' permission. The join onto the frequency list is part-of-speech aware; ten declared cross-tag rules recover the words the two tag conventions merely label differently, and each row's join field says how it matched, so the strict join is one filter away.

License

The combined package is CC-BY-NC-SA 4.0, because the PULS levels are NonCommercial and share-alike at the authors' decision (2026-09-24) and they run through most tables. The frequency list and the two Borodin minimums are CC-BY 4.0 on their own, and the government and collocation tables CC-BY-SA 4.0; drop the PULS level columns and NonCommercial does not apply. LICENSES.md has the per-dataset terms and every attribution.

Citation

Lawrence, J. (2026). ukvocab: the Ukrainian Frequency datasets (top-12,000 lemma
list, validated PULS CEFR overlay, Borodin A1/A2 minimums, crosswalk, B1
enrichment tables), version 0.2.0. jakelawrence.xyz/research/ukrainian-frequency.

Upstream: Chaplynskyi, D. (2023). Introducing UberText 2.0: A Corpus of Modern
Ukrainian at Scale. Proc. 2nd UNLP, ACL. | Synchak, O., Starko, V., Burak, M.,
Svystun, M. (2025). Corpus-Based Vocabulary Profiling for Ukrainian: From
Lexical Analysis to CEFR. eLex 2025; PULS, puls.peremova.org. | Borodin, K. and
Turkevych, O. 1000 i 1 slovo, A1. https://doi.org/10.18452/28236 | Borodin, K.
and Lazarenko, O. (2026). 1000 i 1 slovo, A2. https://doi.org/10.11584/opus4-1448

Archived, DOI-minted copies of each dataset are listed in sources() under conceptDoi once they exist; cite the concept DOI for the dataset you used.