Improve model card with metadata and links

README.md

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-license: mit
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+---
+license: mit
+library_name: transformers
+pipeline_tag: text-generation
+---
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+This repository contains the R1-Code-Interpreter models described in [R1-Code-Interpreter: Training LLMs to Reason with Code via Supervised and Reinforcement Learning](https://huggingface.co/papers/2505.21668).
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+The models are fine-tuned Qwen-2.5 models (3B/7B/14B) trained using supervised fine-tuning (SFT) and reinforcement learning (RL) to generate code during step-by-step reasoning.
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+For code and further details, please refer to the [Github repository](https://github.com/yongchao98/R1-Code-Interpreter) and the [project page](https://huggingface.co/yongchao98).