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--- |
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license: cc-by-sa-4.0 |
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task_categories: |
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- token-classification |
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task_ids: |
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- parsing |
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- part-of-speech |
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- lemmatization |
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language: |
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- vi |
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annotations_creators: |
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- machine-generated |
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language_creators: |
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- found |
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multilinguality: |
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- monolingual |
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source_datasets: |
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- undertheseanlp/UTS_VLC |
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- undertheseanlp/UVN-1 |
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size_categories: |
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- 10K<n<100K |
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tags: |
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- universal-dependencies |
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- vietnamese |
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- nlp |
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- dependency-parsing |
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- pos-tagging |
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--- |
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# UDD-1: Universal Dependency Dataset for Vietnamese |
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## Dataset Description |
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Vietnamese Universal Dependency dataset created by Underthesea NLP. This dataset follows the [Universal Dependencies](https://universaldependencies.org/) annotation guidelines. |
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### Dataset Summary |
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- **Language:** Vietnamese (vi) |
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- **Version:** 1.1 |
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- **Domains:** ⚖️ Legal (Laws) + 📰 News |
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- **Total Sentences:** 20,000 |
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- **Total Tokens:** ~453,551 |
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- **Annotation:** Machine-generated using Underthesea NLP toolkit |
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### Data Sources |
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| Source | Domain | Sentences | Tokens | |
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|--------|--------|----------:|-------:| |
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| [UTS_VLC](https://huggingface.co/datasets/undertheseanlp/UTS_VLC) | ⚖️ Legal | 10,000 | ~230,709 | |
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| [UVN-1](https://huggingface.co/datasets/undertheseanlp/UVN-1) | 📰 News | 10,000 | ~222,842 | |
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| **Total** | | **20,000** | **~453,551** | |
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### Data Splits |
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Following [UD guidelines](https://universaldependencies.org/contributing/repository_files.html): |
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| Split | Sentences | Percentage | |
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|-------|----------:|-----------:| |
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| Train | 18,282 | 91.4% | |
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| Validation | 859 | 4.3% | |
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| Test | 859 | 4.3% | |
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| **Total** | **20,000** | **100%** | |
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## Usage |
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```python |
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from datasets import load_dataset |
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# Load all splits |
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dataset = load_dataset("undertheseanlp/UDD-1") |
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print(dataset) |
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# Access specific split |
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train_data = dataset["train"] |
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dev_data = dataset["validation"] |
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test_data = dataset["test"] |
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# Example sentence |
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print(train_data[0]) |
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``` |
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### Sentence ID Prefixes |
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- `s*` - Sentences from legal corpus (UTS_VLC) |
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- `uvn-*` - Sentences from news corpus (UVN-1) |
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## Fields |
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| Field | Description | |
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|-------|-------------| |
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| `sent_id` | Sentence identifier | |
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| `text` | Original sentence text | |
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| `tokens` | Word tokens | |
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| `lemmas` | Lemmatized forms | |
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| `upos` | Universal POS tags | |
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| `xpos` | Language-specific POS tags | |
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| `feats` | Morphological features | |
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| `head` | Head token indices (1-indexed, 0=root) | |
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| `deprel` | Dependency relation labels | |
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| `deps` | Enhanced dependencies | |
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| `misc` | Miscellaneous annotations | |
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## Citation |
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```bibtex |
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@misc{underthesea_udd1_2026, |
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title = {UDD-1: Universal Dependency Dataset for Vietnamese}, |
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author = {Underthesea NLP}, |
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year = {2026}, |
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publisher = {Hugging Face}, |
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url = {https://huggingface.co/datasets/undertheseanlp/UDD-1} |
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} |
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``` |
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## License |
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This dataset is licensed under [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/). |
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## Contact |
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- GitHub: [undertheseanlp/underthesea](https://github.com/undertheseanlp/underthesea) |
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- Email: anhv.ict91@gmail.com |
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