Junxu Liu
Research Assistant Professor
Department of Electrical and Electronic Engineering (EEE)
Research Centre for Privacy and Security Technologies in Future Smart Systems (RCPST)
The Hong Kong Polytechnic University (PolyU)
Research Assistant Professor
Department of Electrical and Electronic Engineering (EEE)
Research Centre for Privacy and Security Technologies in Future Smart Systems (RCPST)
The Hong Kong Polytechnic University (PolyU)
About Me
I am a Research Assistant Professor (RAP) at the Department of Electrical and Electronic Engineering, The Hong Kong Polytechnic University, and I'm also affiliated with the PolyU Research Centre for Privacy and Security Technologies in Future Smart Systems (RCPST), led by Prof. Haibo Hu. Previously, I served as a Postdoctoral Fellow under the guidance of Prof. Haibo Hu from Feb. 2024 to Jan. 2025. I completed my Ph.D. under the supervision of Prof. Xiaofeng Meng at the School of Information, Renmin University of China. During my doctoral studies, I had the privilege of being a visiting student hosted by Prof. Li Xiong at the Department of Computer Science, Emory University, supported by the Chinese Scholarship Council (CSC) Scholarship.ย
I owe a deep debt of gratitude to all the exceptional supervisors and mentors (including Dr. Jian Lou, Dr. Jinfei Liu, and Dr. Qingqing Ye) I have had the honor of working with throughout my career, each of whom has generously contributed to shaping me as a professional researcher.
My research interests center on safeguarding data privacy in advanced machine learning scenarios (e.g., deep learning, LLMs), with a particular emphasis on privacy-preserving techniques like:ย
Differential Privacy
Federated Learning
Machine Unlearning
I currently have research assistant opportunities available for self-motivated students. If your research interests align with mine, please feel free to reach out to me.
๐ CONTACT ME: ย junxu.liu AT polyu DOT edu.hk
๐ LINKS: Github / Google Scholar / DBLP
2 Feb 2025: I am deeply honored to have been promoted to the position of RAP @ PolyU-EEE & RCPST! Keep going the extra mile! ๐โโ๏ธ
16 Oct 2024: I'm thrilled to share that one of my favorite studies, "Cross-silo Federated Learning with Record-level Personalized Differential Privacy", has been recognized by peers and won the ACM CCS 2024 Distinguished Paper Award! ๐๐คฉ๐ฅณ
21 May 2024: Our paper has been accepted by ACM CCS 2024! SO EXCITED! ๐
04 Mar. 2024: Finally launched my personal website.ย
02 Feb. 2024: Started my first job as a postdoctoral fellow @ PolyU.ย
29 Nov. 2023: Successfully defended my Ph.D. dissertation @ RUC. FINALLY! ๐