Update README.md

README.md

@@ -24,4 +24,96 @@ configs:
   data_files:
   - split: train
     path: data/train-*
+task_categories:
+- translation
+language:
+- ru
+- ba
+size_categories:
+- 1M<n<10M
 ---
+
+# Russian-Bashkir Parallel Corpus
+
+A large-scale parallel corpus for Russian-Bashkir machine translation, containing 9.7M sentence pairs filtered by semantic similarity.
+
+## Dataset Details
+
+- **Languages**: Russian (`rus`) ↔ Bashkir (`bak`)
+- **Size**: 9,768,889 translation pairs
+- **Repository**: [`BorisTM/bak-rus-parallel`](https://huggingface.co/datasets/BorisTM/bak-rus-parallel)
+
+## Usage
+
+```python
+from datasets import load_dataset
+
+dataset = load_dataset("BorisTM/bak-rus-parallel")
+```
+
+## Dataset Fields
+
+| Field | Type | Description |
+|-------|------|-------------|
+| `rus` | string | Russian sentence |
+| `bak` | string | Bashkir sentence |
+| `static_sim` | float32 | Semantic similarity score (cosine similarity, 0-1) |
+| `source` | string | Data source: `"real"` or `"synth"` |
+| `length_rus` | int64 | Character length of Russian sentence |
+| `length_bak` | int64 | Character length of Bashkir sentence |
+
+## Dataset Composition
+
+The corpus combines two sources:
+
+### Real Data (`source="real"`)
+Authentic human-created translations from the following parallel corpora:
+
+| Source | Description |
+|--------|-------------|
+| [`AigizK/bashkir-russian-parallel-corpora`](https://huggingface.co/datasets/AigizK/bashkir-russian-parallel-corpora) | Bashkir-Russian parallel corpus |
+| **TIL-MT Corpus** | Turkic Interlingua parallel corpus (ba-ru) |
+| **NLLB** (OPUS) | NLLB ba-ru parallel corpus from [opus.nlpl.eu](https://opus.nlpl.eu) |
+| **Wikimedia** (OPUS) | Wikimedia ba-ru parallel corpus from [opus.nlpl.eu](https://opus.nlpl.eu) |
+
+### Synthetic Data (`source="synth"`)
+Generated via back-translation using the [`facebook/nllb-200-distilled-600M`](https://huggingface.co/facebook/nllb-200-distilled-600M) model on the following raw Bashkir text corpora:
+
+| Source | Description |
+|--------|-------------|
+| [`omarkamali/wikipedia-monthly`](https://huggingface.co/datasets/omarkamali/wikipedia-monthly) | Bashkir Wikipedia (2025-10-01 dump) |
+| [`HuggingFaceFW/fineweb-2`](https://huggingface.co/datasets/HuggingFaceFW/fineweb-2) | FineWeb-2 bak_Cyrl split |
+| [`cis-lmu/Glot500`](https://huggingface.co/datasets/cis-lmu/Glot500) | Glot500 bak_Cyrl split |
+| **HPOLT 3.0** | High-quality multilingual web text (bak_Cyrl) |
+
+## Filtering
+
+All sentence pairs are filtered by the following criteria:
+
+- **Semantic similarity** > 0.25 (computed using [`BorisTM/static_rus_bak`](https://huggingface.co/BorisTM/static_rus_bak) embeddings)
+- **Sentence length**: <512 for both languages
+
+## Statistics
+
+| Source | Count |
+|--------|-------|
+| Real | ~3.0M pairs |
+| Synthetic | ~6.8M pairs |
+| **Total** | **9.7M pairs** |
+
+## License
+
+Please refer to the original source licenses for specific data components.
+
+## Citation
+
+If you use this dataset, please cite:
+
+```bibtex
+@dataset{bak_rus_parallel,
+  title = {Russian-Bashkir Parallel Corpus},
+  author = {BorisTM},
+  year = {2025},
+  url = {https://huggingface.co/datasets/BorisTM/bak-rus-parallel}
+}
+```