| --- |
| license: cc-by-4.0 |
| language: |
| - ba |
| pretty_name: Bashkir Frequency Index (83M tokens, RU-filtered press corpus) |
| task_categories: |
| - text-classification |
| configs: |
| - config_name: public |
| data_files: |
| - split: train |
| path: frequency_public.parquet |
| - config_name: full |
| data_files: |
| - split: train |
| path: frequency_full.parquet |
| tags: |
| - bashkir |
| - frequency |
| - wordlist |
| - lexicon |
| - low-resource |
| - cyrillic |
| - corpus-statistics |
| --- |
| |
| # Bashkir Frequency Index v6.1 |
|
|
| Word-frequency index for the Bashkir language, built from **83.27 million |
| tokens** of cleaned monolingual text (newspapers, magazines, encyclopedia, |
| Wikipedia, literature, speech transcripts; Russian-language admixture removed |
| by sentence-level filtering). |
|
|
| ## Configurations |
|
|
| | config | rows | cutoff | use case | |
| |---|---:|---|---| |
| | **`public`** (recommended) | 521,415 | count ≥ 3 | applications, spellcheckers, T9, research | |
| | `full` | 1,290,098 | count ≥ 1 | morphology studies, OCR noise analysis | |
|
|
| Additionally: [`top_coverage_50.json`](top_coverage_50.json) — the minimal |
| set of **1,634 word forms covering 50% of all tokens** (with cumulative |
| coverage), handy as a "learn these first" vocabulary list. |
|
|
| ## Schema |
|
|
| | column | type | description | |
| |---|---|---| |
| | `rank` | int64 | position by descending count | |
| | `word` | string | word form, lowercase | |
| | `count` | int64 | absolute frequency (tokens) | |
| | `ipm` | float | instances per million tokens | |
| | `doc_freq` | int32 | number of sentences containing the form | |
|
|
| ## Sample |
|
|
| | rank | word | count | ipm | doc_freq | |
| |---:|---|---:|---:|---:| |
| | 1 | һәм | 1,086,463 | 13,046.8 | 775,593 | |
| | 23 | башҡорт | 160,963 | 1,932.9 | 114,353 | |
| | 126 | йылға | 59,878 | 719.0 | 55,988 | |
| | 390 | тел | 23,031 | 276.6 | 19,225 | |
| | 439 | һуғыш | 20,963 | 251.7 | 17,315 | |
| |
| ## Coverage |
| |
| | tokens covered | forms needed | |
| |---:|---:| |
| | 25% | 188 | |
| | 50% | 1,634 | |
| | 80% | 17,559 | |
| | 90% | 53,852 | |
| | 95% | 131,559 | |
| |
| ## Method |
| |
| - Tokenization: regex lowercase extraction over the Cyrillic alphabet incl. |
| the 9 Bashkir-specific letters (`Ә Ғ Ҙ Ҡ Ң Ө Ҫ Ү Һ`). |
| - Corpus base: monolingual master v2 — 5,481,554 sentences; Russian |
| sentences (~11.6% of tokens in the previous version) removed with a |
| function-word filter (`ru_filter_v1`). |
| - Cleanups vs v5.0: glued-word forms >24 chars dropped (490), 1-char forms |
| dropped except `ә / у / а`, 34,922 rare forms merged into their |
| Damerau-Levenshtein-1 neighbours (conservative: ratio ≥ 50, length ≥ 5). |
| |
| |
| ## v6.1 changelog |
| |
| - Removed 65 Russian function-word forms that leak inside Bashkir sentences |
| (quotes, names): на, не, по, из, это... — 648,304 tokens. The list is |
| homograph-checked against Bashkir (kept: был = "this", ни = "what", |
| ти/тип = quotative, да/ла/лә/ҙа = "also" particle, без = "we"). |
| - Removed single-letter forms а, у (Russian-dominant usage); kept ә |
| (the Bashkir conjunction "and"). |
| - Baseline cleanups identical to v6.0 (glued forms, typo merge). |
| |
| ## Known caveats |
| |
| - The index is **wordform-level** (not lemmatized): agglutination produces |
| many forms of one lemma. |
| - The long tail (count < 3) contains OCR/source typos and glued artifacts. |
| - Proper names, especially Russian patronymics, appear in the tail. |
| |
| ## Loading |
| |
| ```python |
| from datasets import load_dataset |
|
|
| freq = load_dataset("failed09/bashkir-frequency-index", "public")["train"] |
| |
| # top-20 verbs starting with "бар" |
| [f for f in freq.filter(lambda r: r["word"].startswith("бар"))][:20] |
| ``` |
| |
| ## Citation |
| |
| ```bibtex |
| @dataset{failed09_bashkir_frequency_index_2026, |
| title = {Bashkir Frequency Index v6.1}, |
| author = {failed09}, |
| year = {2026}, |
| publisher = {Hugging Face}, |
| url = {https://huggingface.co/datasets/failed09/bashkir-frequency-index} |
| } |
| ``` |
| |
