😊 About Me

I am currently a Ph.D. candidate at The Hong Kong Polytechnic University, co-supervised by Prof. Haibo Hu and Dr. Minxin Du. Prior to this, I received my B.Eng. in Electronics and Communication Engineering from Sun Yat-sen University (SYSU) in 2024.

Research Interests

• Machine unlearning for large language models (LLMs): efficient algorithms for selectively “forgetting” specific data in pre-trained LLMs—removing unwanted knowledge while preserving overall performance, without retraining from scratch.
• Understanding of LLMs: analyzing internal parameter–feature relationships to interpret how weight patterns shape model behavior.

🔥 News

• 🗓️ June 2025 — Invited to review for ACM Transactions on the Web (TWEB).
• 🗓️ June 2025 — Invited by EMNLP to serve as a secondary (external) reviewer.
• 🗓️ May 2025 — My personal homepage officially launched!

📝 Publications

• Unlearning Isn’t Deletion: Investigating Reversibility of Machine Unlearning in LLMs
  arXiv preprint: 2505.16831 • PDF
  Xiaoyu Xu, Xiang Yue, Yang Liu, Qingqing Ye, Haibo Hu, Minxin Du

• OBLIVIATE: Robust and Practical Machine Unlearning for Large Language Models
  arXiv preprint: 2505.04416 • PDF
  Xiaoyu Xu, Minxin Du, Qingqing Ye, Haibo Hu

📖 Educations

• 2020.09 – 2024.06, Bachelor of Engineering in Electronics and Communication Engineering, Sun Yat-sen University (SYSU)
• 2024.09 – present, Ph.D. Candidate, The Hong Kong Polytechnic University

🎯 Interests

• Fitness enthusiast: Passionate about strength training, cardio, and maintaining a healthy lifestyle.
• Music lover: Enjoy listening to Mandopop artists such as Jay Chou, G.E.M., JJ Lin, and David Tao.