Xueyi Chen

ENCODE Lab

Westlake University

Hangzhou, Zhejiang, China

About Me

I am Xueyi Chen (Chinese: 陈学翊), an incoming PhD student at Westlake University starting in Fall 2026 advised by Prof. Huan Wang, and currently a research intern at the ENCODE Lab. Previously, I earned my MSc in Computer Science from The Chinese University of Hong Kong (CUHK) in 2025 supervised by Prof. Bei Yu and my BEng in Software Engineering from Fuzhou University in 2024.

Research Interests

I am broadly interested in building efficient and capable AI systems:

Efficient LLM/MLLM [StreamingTOM]
Effective Diffusion Language Models
RL for Model Optimization [OORL] [ToTRL]

I am actively seeking research internships and always open to potential collaborations. Please feel free to contact me at xueyi.chen.2024@gmail.com or chenxueyi@westlake.edu.cn.

News

Oct 21, 2025	📄 Our paper “StreamingTOM: Streaming Token Compression for Efficient Video Understanding” is on arXiv! Thanks to co-authors Keda Tao, Kele Shao, and Prof. Huan Wang. Check it out here!
Oct 15, 2025	🎓 Graduated with my M.Sc. in CS from CUHK! Huge thanks to my advisor Prof. Bei Yu and collaborators Rui Ming and Haoyuan Wu. Next stop: Westlake University!
Jun 30, 2025	🚀 Joined ENCODE Lab at Westlake University as a visiting student, advised by Prof. Huan Wang. Excited to work on efficient AI systems!

Selected Publications

arXiv

StreamingTOM: Streaming Token Compression for Efficient Video Understanding

Xueyi Chen, Keda Tao, Kele Shao, and Huan Wang

arXiv preprint arXiv:2510.18269, Oct 2025

Under review

arXiv Bib HTML PDF Website

@article{chen2025streamingtom,
  title = {StreamingTOM: Streaming Token Compression for Efficient Video Understanding},
  author = {Chen, Xueyi and Tao, Keda and Shao, Kele and Wang, Huan},
  journal = {arXiv preprint arXiv:2510.18269},
  year = {2025},
  month = oct,
  note = {Under review},
}

NeurIPS

On-Policy Optimization with Group Equivalent Preference for Multi-Programming Language Understanding

Haoyuan Wu^*, Rui Ming^*, Jilong Gao^*, Hangyu Zhao, Xueyi Chen, Yikai Yang, Haisheng Zheng, Zhuolun He, and Bei Yu

In Advances in Neural Information Processing Systems (NeurIPS), Sep 2025

arXiv Bib HTML PDF

@inproceedings{wu2025onpolicy,
  title = {On-Policy Optimization with Group Equivalent Preference for Multi-Programming Language Understanding},
  author = {Wu, Haoyuan and Ming, Rui and Gao, Jilong and Zhao, Hangyu and Chen, Xueyi and Yang, Yikai and Zheng, Haisheng and He, Zhuolun and Yu, Bei},
  booktitle = {Advances in Neural Information Processing Systems (NeurIPS)},
  year = {2025},
  month = sep,
  publisher = {NeurIPS},
}

arXiv

ToTRL: Unlock LLM Tree-of-Thoughts Reasoning Potential through Puzzles Solving

Haoyuan Wu^*, Xueyi Chen^*, Rui Ming, Jilong Gao, Shoubo Hu, Zhuolun He, and Bei Yu

arXiv preprint arXiv:2505.12717, May 2025

Under review

arXiv Bib HTML PDF

@article{wu2025totrl,
  title = {ToTRL: Unlock LLM Tree-of-Thoughts Reasoning Potential through Puzzles Solving},
  author = {Wu, Haoyuan and Chen, Xueyi and Ming, Rui and Gao, Jilong and Hu, Shoubo and He, Zhuolun and Yu, Bei},
  journal = {arXiv preprint arXiv:2505.12717},
  year = {2025},
  month = may,
  note = {Under review},
}