Add dataset card

README.md

@@ -1,40 +1,87 @@
----
-license: mit
-dataset_info:
-  features:
-  - name: messages
-    list:
-    - name: content
-      dtype: string
-    - name: role
-      dtype: string
-  - name: language
-    dtype: string
-  - name: difficulty
-    dtype: string
-  - name: source
-    dtype: string
-  - name: has_tests
-    dtype: bool
-  - name: test_cases
-    dtype: string
-  - name: has_reasoning
-    dtype: bool
-  - name: has_tools
-    dtype: bool
-  - name: tools
-    dtype: string
-  - name: quality_score
-    dtype: float64
-  splits:
-  - name: train
-    num_bytes: 3115686465
-    num_examples: 420686
-  download_size: 1283979827
-  dataset_size: 3115686465
-configs:
-- config_name: default
-  data_files:
-  - split: train
-    path: data/train-*
----
+---
+license: apache-2.0
+language:
+- en
+tags:
+- code
+- programming
+- competitive-programming
+- mathematics
+- reasoning
+- chain-of-thought
+- tool-use
+size_categories:
+- 100K<n<1M
+task_categories:
+- text-generation
+---
+
+# Fumea Coder Dataset
+
+A high-quality, deduplicated dataset for training coding and mathematics language models.
+
+## Dataset Statistics
+
+- **Total Samples**: 420,686
+- **Format**: ChatML (messages array)
+- **Languages**: Python, JavaScript, C++, Java, and more
+
+## Sources
+
+This dataset merges and cleans data from:
+
+| Source | Samples | Description |
+|--------|---------|-------------|
+| ByteDance-Seed/Code-Contests-Plus | 10,293 | Competitive programming |
+| open-r1/codeforces | 47,558 | Codeforces problems |
+| sahil2801/CodeAlpaca-20k | 15,784 | General coding |
+| nampdn-ai/tiny-codes | 159,992 | Educational examples |
+| stallone/glaive-code-assistant-v3 | 94,732 | Code assistance |
+| AlicanKiraz0/Agentic-CoT-Coding-SFT | 429 | Chain-of-thought |
+| deepmind/code_contests | 12,943 | AlphaCode problems |
+
+## Features
+
+- ✅ Samples with test cases: 23,236
+- ✅ Samples with reasoning: 18,401
+- ✅ Samples with tool definitions: 0
+
+## Processing Pipeline
+
+1. **Raw merge**: 441,838 samples
+2. **Exact deduplication**: 431,574 samples
+3. **MinHash LSH deduplication**: 425,128 samples
+4. **Quality filtering**: 420,686 samples
+
+## Usage
+
+```python
+from datasets import load_dataset
+
+dataset = load_dataset("Fumea/fumea_coder_dataset")
+
+# Each sample has:
+# - messages: List of {role, content} for ChatML format
+# - language: Programming language
+# - difficulty: easy/medium/hard/expert
+# - source: Original dataset
+# - has_tests: Whether test cases are available
+# - test_cases: JSON string of test cases
+# - has_reasoning: Whether chain-of-thought is included
+# - quality_score: Computed quality score
+```
+
+## License
+
+Apache 2.0 (inherits from source datasets)
+
+## Citation
+
+```bibtex
+@misc{fumea_coder_dataset,
+  title={Fumea Coder Dataset},
+  author={Fumea},
+  year={2025},
+  url={https://huggingface.co/datasets/Fumea/fumea_coder_dataset}
+}
+```