I am currently a first-year MSML student at Carnegie Mellon University. Previously, I completed my undergraduate studies in Computer Science at University of Rochester, where I had the privilege of being advised by Prof. Jiebo Luo. I have also collaborated with Prof. Haohan Wang at UIUC DREAM Lab. In the summer of 2024, I was a visiting researcher at Washington University in St. Louis with Prof. Jiaxin Huang.

My research interests lie in improving training and inference efficiency as well as model alignment of both LLMs and VLMs.

Feel free to email me if you are interested in collaborating or discussing research ideas.

๐Ÿ”ฅ News

๐Ÿ“– Educations

  • 2024.08 - Present, M.S. in Machine Learning, Carnegie Mellon University, USA
  • 2020.08 - 2024.05, B.S. in Computer Science, University of Rochester, USA

๐Ÿ“ Publications (* denotes equal contribution)

2025
  1. Taming Overconfidence in LLMs: Reward Calibration in RLHF
    Jixuan Leng, Chengsong Huang, Banghua Zhu, and Jiaxin Huang
    The Thirteenth International Conference on Learning Representations (ICLR) 2025 | [ arXiv Code Preview ]
2024
  1. S^2FT: Efficient, Scalable and Generalizable LLM Fine-tuning by Structured Sparsity
    Xinyu Yang, Jixuan Leng, Geyang Guo, Jiawei Zhao, Ryumei Nakada, Linjun Zhang, Huaxiu Yao, and Beidi Chen
    The Thirty-eighth Annual Conference on Neural Information Processing Systems (NeurIPS) 2024 | [ arXiv Code OpenReview Preview ]
  2. Development of UroSAM: A Machine Learning Model to Automatically Identify Kidney Stone Composition from Endoscopic Video
    Jixuan Leng, Junfei Liu, Galen Cheng, Haohan Wang, Scott Quarrier, Jiebo Luo, and Rajat Jain
    Journal of Endourology 2024 | [ Website ]
  3. Choosing Wisely and Learning Deeply: Selective Cross-Modality Distillation via CLIP for Domain Generalization
    Jixuan Leng, Yijiang Li, and Haohan Wang
    Transactions on Machine Learning Research (TMLR) 2024 | [ arXiv Code OpenReview ]

๐Ÿ”ฌ Research Experience

๐Ÿ“ Service

  • 2024.10 - Present, TMLR reviewer.
  • 2022.01 - 2023.05, Teaching Assistant for CSC261/461: Database System, University of Rochester.