👋 Welcome to my site!

Hey! 😊 I’m Xuan Liu, a first-year Ph.D. student at UC San Diego, where I am fortunate to work with Prof. Haojian Jin.

Previously I completed my Bachelor’s in Electronic & Information Engineering at Hong Kong Polytechnic University. During my undergraduate period, I am grateful to have been advised and collaborated with Prof. Song Guo (HKUST, Hong Kong), Prof. Haibo Hu (PolyU, Hong Kong), Prof. Quanyan Zhu (NYU, New York), and Prof. Xiaoxiao Li (UBC, Vancouver).

🚀 What’s New

2025-9 📝 Xuan’s co-author work, “Virus Infection Attack on LLMs: Your Poisoning Can Spread ‘VIA’ Synthetic Data”, has been accepted as a 🌟 Spotlight Paper at NeurIPS 2025. Special congratulations to the first author, Zi Liang! 🚀👏
2025-7 🎓 👏 Xuan graduated from The Hong Kong Polytechnic University with a Bachelor of Engineering, earning 1st Class Honors and a place on the Dean’s Honor List for consecutive years!
2025-1 📝 Xuan’s first author “Exploring Prosocial Irrationality for LLM Agents: A Social Cognition View” has been accepted by ICLR-2025.
2025-1 🤝 Xuan received “Hsin Chong-K.N. Godfrey Yeh Education Fund”.
2024-12 📝 Xuan’s first author work “Mjölnir: Breaking the Shield of Perturbation-Protected Gradients via Adaptive Diffusion” has been accepted by AAAI-2025.
2024-12 📝 Xuan’s co-author work “PriFairFed: A Local Differentially Private Federated Learning Algorithm for Client-Level Fairness” has been accepted by IEEE Transactions on Mobile Computing.
2024-8 📝 Xuan’s first author work “Mutual Gradient Inversion: Unveiling Privacy Risks of Federated Learning on Multi-modal Signals” has been accepted by IEEE Signal Processing Letters.
2024-4 🏆 Xuan received the Best Undergraduate Research Project Award! See University Official Posts & Interview at Instagram, LinkedIn.
2024-1 🤝 Xuan’s Start-up BreathingCORE won MicroFund Shortlisted Team and has been selected for Hong Kong Science and Technology Park Ideation Program!
2023-12 Xuan won “Outstanding Proposal of Belt and Road Initiatives Youth Creative International Challenge”. See University Official Posts at Facebook
2023-11 Xuan received “98th IEEE-VTC Fall Volunteer Service Award”.
2023-9 🏆 Xuan won “Champion of Innovation & Entrepreneurship Training Camp Roadshow,” securing a 7K CNY cash award.
2023-7 🏆 Xuan received “Department of Electronic and Information Engineering Scholarship for Hall Residents”, for the Top 1 GPA in the academic year of 2022 in the Dept.
2023-4 Xuan received “Hong Kong Government-Researching Out Award”.
2023-4 Xuan received “Hong Kong Government-Talent Development Scholarship”.
2023-2 📝 Xuan’s first author work “MGIA: Mutual Gradient Inversion Attack in Multi-Modal Federated Learning” has been published on AAAI-2023 as a student abstract.
2022-12 Xuan received “Dr. Winnie S M Tang-PolyU Student Innovation & Entrepreneurship Scholarship “.
2022-11 🏆 Xuan won “Best GPA Award” Department of Electronic and Information Engineering.
2022-8 Xuan received the “Shenzhen Innovation & Entrepreneurship Competition Outstanding Award,” securing a 7K CNY cash award.