2025 preprint RedStar: Does Scaling Long-CoT Data Unlock Better Slow-Reasoning Systems? Haotian Xu, Xing Wu, Weinong Wang, Zhongzhi Li, Da Zheng, Boyuan Chen, Yi Hu, Shijia Kang, Jiaming Ji, Yingying Zhang, Zhijiang Guo, Yaodong Yang, Muhan Zhang, and Debing Zhang 2025 Paper Code preprint Training Large Language Models to be Better Rule Followers Yi Hu, Shijia Kang, Haotong Yang, Haotian Xu, and Muhan Zhang 2025 Paper 2024 ICML2024 Case-Based or Rule-Based: How Do Transformers Do the Math? Yi Hu, Xiaojuan Tang, Haotong Yang, and Muhan Zhang 2024 Paper Code Poster ICLR2025 Number Cookbook: Number Understanding of Language Models and How to Improve It Haotong Yang, Yi Hu, Shijia Kang, Zhouchen Lin, and Muhan Zhang 2024 Paper Code 2023 preprint Code Prompting: a Neural Symbolic Method for Complex Reasoning in Large Language Models Yi Hu, Haotong Yang, Zhouchen Lin, and Muhan Zhang 2023 Paper