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--- |
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license: apache-2.0 |
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language: |
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- en |
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tags: |
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- code |
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- programming |
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- competitive-programming |
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- mathematics |
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- reasoning |
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- chain-of-thought |
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- tool-use |
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size_categories: |
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- 100K<n<1M |
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task_categories: |
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- text-generation |
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--- |
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# uCoder Dataset |
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A high-quality, deduplicated dataset for training coding and mathematics language models. |
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## Dataset Statistics |
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- **Total Samples**: 420,686 |
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- **Format**: ChatML (messages array) |
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- **Languages**: Python, JavaScript, C++, Java, and more |
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## Sources |
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This dataset merges and cleans data from: |
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| Source | Samples | Description | |
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|--------|---------|-------------| |
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| ByteDance-Seed/Code-Contests-Plus | 10,293 | Competitive programming | |
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| open-r1/codeforces | 47,558 | Codeforces problems | |
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| sahil2801/CodeAlpaca-20k | 15,784 | General coding | |
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| nampdn-ai/tiny-codes | 159,992 | Educational examples | |
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| stallone/glaive-code-assistant-v3 | 94,732 | Code assistance | |
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| AlicanKiraz0/Agentic-CoT-Coding-SFT | 429 | Chain-of-thought | |
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| deepmind/code_contests | 12,943 | AlphaCode problems | |
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## Features |
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- Samples with test cases: 23,236 |
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- Samples with reasoning: 18,401 |
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## Processing Pipeline |
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1. **Raw merge**: 441,838 samples |
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2. **Exact deduplication**: 431,574 samples |
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3. **MinHash LSH deduplication**: 425,128 samples |
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4. **Quality filtering**: 420,686 samples |
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## Usage |
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```python |
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from datasets import load_dataset |
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dataset = load_dataset("uaytug/ucoder-dataset") |
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# Each sample has: |
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# - messages: List of {role, content} for ChatML format |
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# - language: Programming language |
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# - difficulty: easy/medium/hard/expert |
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# - source: Original dataset |
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# - has_tests: Whether test cases are available |
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# - test_cases: JSON string of test cases |
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# - has_reasoning: Whether chain-of-thought is included |
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# - quality_score: Computed quality score |
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``` |
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## License |
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Apache 2.0 (inherits from source datasets) |
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## Citation |
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```bibtex |
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@misc{ucoder-dataset, |
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title={uCoder Dataset}, |
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author={Umut Aytuğ Semerci}, |
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year={2025}, |
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url={https://huggingface.co/datasets/uaytug/ucoder-dataset} |
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} |
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``` |
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