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distillation/recipes/open_datasets/omni_thought.md
2025-05-27 18:55:46 +08:00

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# OmniThought: A Large-Scale Chain-of-Thought Dataset for Advancing Large Reasoning Models
## Overview
The rise of **Large Reasoning Models (LRMs)** has revolutionized **Natural Language Processing (NLP)**, enabling breakthroughs in complex tasks like **mathematical problem-solving** and **code generation**. These models rely on **Chain-of-Thought (CoT)** processes to mimic human-like reasoning. However, progress in LRMs is limited by the scarcity of **high-quality, large-scale CoT datasets**—existing resources often lack:
- **Diverse reasoning problems** with well-structured CoT processes.
- **Multi-teacher distillation** to ensure reasoning quality.
- **Fine-grained annotations** describing CoT properties.
To bridge this gap, we introduce **`OmniThought`**, a **2-million-scale CoT dataset** generated and validated by **two powerful LRMs**. Each CoT process is annotated with:
- **Reasoning Verbosity (RV)**: Measures the optimal verbosity of reasoning steps.
- **Cognitive Difficulty (CD)**: Assesses the complexity of reasoning for model comprehension.
We also propose a **self-reliant pipeline** for dataset curation, ensuring high-quality reasoning traces.
## Key Features
**2 million high-quality CoT processes** covering diverse reasoning tasks.
**RV-CD scores** to guide model training for better reasoning performance.
**Multi-teacher distillation** for robust and coherent reasoning paths.
**Optimized for LRM training**—improves reasoning ability and output quality.
## Experiments & Results
Extensive experiments with **Qwen2.5 models** (various sizes) confirm that:
- Training with **RV-CD scores** enhances **LRM reasoning effectiveness**.
- Models trained on `OmniThought` achieve **stronger reasoning abilities** with **optimal CoT length and difficulty**.
Based on this dataset, we release **a series of high-performance LRMs** with superior reasoning capabilities.
## Use the Datasets
```python
from datasets import load_dataset
# Login using e.g. `huggingface-cli login` to access this dataset
ds = load_dataset("alibaba-pai/OmniThought")
```
## Reference
For more detailed information about the dataset construction process, we encourage you to refer to our paper:
- **Reasoning with OmniThought: A Large CoT Dataset with Verbosity and Cognitive Difficulty Annotations**
Wenrui Cai, Chengyu Wang, Junbing Yan, Jun Huang, Xiangzhong Fang
[arXiv:2505.10937](https://arxiv.org/abs/2505.10937)
You can cite the paper using the following citation format:
```bibtex
@misc{cai2025reasoningomnithoughtlargecot,
title={Reasoning with OmniThought: A Large CoT Dataset with Verbosity and Cognitive Difficulty Annotations},
author={Wenrui Cai and Chengyu Wang and Junbing Yan and Jun Huang and Xiangzhong Fang},
year={2025},
eprint={2505.10937},
archivePrefix={arXiv},
primaryClass={cs.CL},
url={https://arxiv.org/abs/2505.10937}
}
```