Junjie Liu

I'm a master student at Department of Computer Science and Engineering, Sun Yat-sen University, advised by Prof. Xu Chen. Before that, I received my Bachelor’s degree from Sun Yat-sen University.

I was fortunate to be advised by Prof. Song Guo during my internship at PEILab, The Hong Kong University of Science and Technology.

My research interests lie in efficient AI and machine learning systems.

News

[2026.05] TwinQuant is accepted by ICML 2026 🎉

Education

	Sun Yat-sen University 2025.09 - Present M.S. in Computer Science and Engineering Advisor: Prof. Xu Chen
	The Hong Kong University of Science and Technology 2025.02 - 2025.08 Visiting Student in Computer Science and Engineering Advisor: Prof. Song Guo
	Sun Yat-sen University 2021.09 - 2025.06 B.E. in Computer Science and Engineering

Publications

TwinQuant: Learnable Subspace Decomposition for 4-Bit LLM Quantization Haodong Wang, Junjie Liu, Zicong Hong, Qianli Liu, Jian Lin, Song Guo, Xu Chen International Conference on Machine Learning (ICML), 2026

Internships

	PEILab @ HKUST 2025.02 - 2025.08 Research Assistant Research on (multimodal) large language models inference acceleration Advisor: Prof. Song Guo
	Huawei 2024.07 - 2024.09 Research Intern Research on large language models for log anomaly detection

Honors & Awards

First-Prize SYSU Postgraduate Scholarship, 2025
SYSU Undergraduate Scholarship, 2022, 2023, 2024
Third Prize, International Competition of Autonomous Walking Intelligent Robots, RUNNING ROBOT, 2023

Misc

Enjoy music 🎵, movies 🎬, basketball 🏀, running 🏃‍♂️.
During my time at PEILab, I was very fortunate to work with Haodong Wang and Zicong Hong. I am very grateful for their guidance and support.