Fine-R1: Make Multi-modal LLMs Excel in Fine-Grained Visual Recognition by Chain-of-Thought Reasoning
This is the official model repository for the paper Fine-R1: Make Multi-modal LLMs Excel in Fine-Grained Visual Recognition by Chain-of-Thought Reasoning.
Introduction
Fine-R1 is a Multi-modal Large Language Model (MLLM) specifically designed for Fine-Grained Visual Recognition (FGVR). While general MLLMs often struggle with distinguishing between highly similar sub-categories, Fine-R1 bridges the gap between generative models and specialized discriminative models (like CLIP) through an R1-style training framework.
Key Innovations:
- Chain-of-Thought Supervised Fine-tuning (CoT-SFT): The model is trained on high-quality FGVR CoT datasets, teaching it to perform visual analysis, consider candidate sub-categories, and compare them before predicting.
- Triplet Augmented Policy Optimization (TAPO): This includes Intra-class Augmentation to handle visual variance and Inter-class Augmentation to maximize distinction between similar sub-categories.
With only 4-shot training, Fine-R1 excels in identifying both seen and unseen sub-categories, outperforming many general reasoning MLLMs and contrastive models.
Resources
- Paper: Hugging Face Papers
- GitHub: PKU-ICST-MIPL/FineR1_ICLR2026
Usage
This model is compatible with the Hugging Face transformers library. For detailed instructions on environment setup, training scripts, and evaluation pipelines (closed-world and open-world), please refer to the official GitHub Repository.
Citation
If you find Fine-R1 helpful in your research, please cite the following paper:
@article{he2026finer1,
title={Fine-R1: Make Multi-modal LLMs Excel in Fine-Grained Visual Recognition by Chain-of-Thought Reasoning},
author={He, Hulingxiao and Geng, Zijun and Peng, Yuxin},
journal={arXiv preprint arXiv:2602.07605},
year={2026}
}
License
This project is licensed under the MIT License.
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Install from pip and serve model
# Install vLLM from pip: pip install vllm# Start the vLLM server: vllm serve "StevenHH2000/Fine-R1-7B"# Call the server using curl (OpenAI-compatible API): curl -X POST "http://localhost:8000/v1/chat/completions" \ -H "Content-Type: application/json" \ --data '{ "model": "StevenHH2000/Fine-R1-7B", "messages": [ { "role": "user", "content": [ { "type": "text", "text": "Describe this image in one sentence." }, { "type": "image_url", "image_url": { "url": "https://cdn.britannica.com/61/93061-050-99147DCE/Statue-of-Liberty-Island-New-York-Bay.jpg" } } ] } ] }'