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