Add cleaned and precleaned Bashkir-Russian Wikipedia corpus

README.md

@@ -1,3 +1,110 @@
 ---
 license: cc-by-sa-4.0
+language:
+- ba
+- ru
+pretty_name: Bashkir-Russian Wikipedia Parallel Corpus
+task_categories:
+- translation
+configs:
+- config_name: cleaned
+  data_files:
+  - split: train
+    path: cleaned/data.parquet
+- config_name: precleaned
+  data_files:
+  - split: train
+    path: precleaned/data.parquet
+tags:
+- bashkir
+- russian
+- wikipedia
+- cyrillic
+- low-resource
+- parallel-corpus
+- sentence-level
 ---
+
+# Bashkir-Russian Wikipedia Parallel Corpus
+
+Sentence-level Bashkir-Russian parallel data extracted from the Bashkir and
+Russian Wikipedia dumps dated `2026-08-01`.
+
+This repository provides two configurations. The default `cleaned`
+configuration is recommended for machine translation training. The
+`precleaned` configuration is an earlier, less filtered extraction provided
+for alternative preprocessing and research.
+
+## Configurations
+
+### cleaned
+
+- 72,007 sentence pairs
+- 34,566 linked article pairs
+- URLs, MediaWiki markup, card fragments and malformed punctuation removed
+- duplicate and identical pairs removed
+- sentence indices retained
+
+Fields:
+
+- `ba_title`: Bashkir Wikipedia article title
+- `ru_title`: Russian Wikipedia article title
+- `section`: `lead` or `facts`
+- `ba`: Bashkir sentence
+- `ru`: Russian sentence
+- `ba_sentence_index`: sentence index in the Bashkir article
+- `ru_sentence_index`: sentence index in the Russian article
+
+### precleaned
+
+- 91,949 sentence pairs
+- earlier extraction with lighter filtering
+- contains older Wiki markup, links and alignment noise
+
+Fields:
+
+- `ba_title`
+- `ru_title`
+- `section`
+- `ba`
+- `ru`
+
+## Source and Processing
+
+The data was extracted from corresponding Bashkir and Russian Wikipedia
+articles using the `bawiki-20260801` and `ruwiki-20260801` dumps.
+
+The cleaned configuration uses article-local sentence indices, numeric
+anchors for factual pairs, length-ratio checks, language checks, duplicate
+removal and service-fragment filtering. The alignment is automatic and has
+not been fully verified by human annotators. Some imperfectly equivalent
+pairs may remain.
+
+## License
+
+The source text is derived from Wikipedia and is distributed under the
+[Creative Commons Attribution-ShareAlike 4.0 International license](https://creativecommons.org/licenses/by-sa/4.0/).
+
+Please preserve Wikipedia attribution when redistributing or publishing
+derivative datasets.
+
+## Loading
+
+```python
+from datasets import load_dataset
+
+cleaned = load_dataset("failed09/bashkir-wikipedia-parallel", "cleaned")
+precleaned = load_dataset("failed09/bashkir-wikipedia-parallel", "precleaned")
+```
+
+## Citation
+
+```bibtex
+@dataset{failed09_bashkir_russian_wikipedia_parallel_2026,
+  title = {Bashkir-Russian Wikipedia Parallel Corpus},
+  author = {failed09},
+  year = {2026},
+  publisher = {Hugging Face},
+  url = {https://huggingface.co/datasets/failed09/bashkir-wikipedia-parallel}
+}
+```

cleaned/data.parquet

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+version https://git-lfs.github.com/spec/v1
+oid sha256:6c336138bc85d1c88066de1707de7e63331693c584ffdee0e980785bca855753
+size 16422979

metadata.json

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+{
+  "name": "bashkir-russian-wikipedia-parallel",
+  "dump_date": "2026-08-01",
+  "license": "CC BY-SA 4.0",
+  "license_url": "https://creativecommons.org/licenses/by-sa/4.0/",
+  "configs": {
+    "cleaned": {
+      "file": "cleaned/data.parquet",
+      "version": "v6",
+      "rows": 72007,
+      "linked_article_pairs": 34566,
+      "columns": ["ba_title", "ru_title", "section", "ba", "ru", "ba_sentence_index", "ru_sentence_index"]
+    },
+    "precleaned": {
+      "file": "precleaned/data.parquet",
+      "version": "v1",
+      "rows": 91949,
+      "columns": ["ba_title", "ru_title", "section", "ba", "ru"]
+    }
+  }
+}

precleaned/data.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:61e960e1a122d45a5ae92b6d8116590cfb0b800bb54a815b2e3721406b2fa7a6
+size 20028563