👋 Welcome to my site!

Hello! 😊 I’m Xuan Liu, a senior-year Electronic and Information Engineering undergraduate at Hong Kong Polytechnic University. I’m a highly self-motivated researcher and innovator with a robust ability in execution and leadership.

My research interests lie in Trustworthy & Cognitive AI, Privacy, Large-Scale Models, and Attack & Defense Algorithms. I’m honored to be supervised by Prof. Song Guo, at HKUST (Hong Kong) during my undergraduate period. Also, I’m thankful for the mentorship by Prof. Quanyan Zhu, at NYU (New York) on interdisciplinary research on Multi-Agent LLM system for social science during Spring 2024. In the summer, I was on my Research Internship with Prof. Xiaoxiao Li, at UBC (Vancouver) on building the distributed training system for Large-Scale Models.

In addition to academic pursuits, I’m the founder of BreathingCORE, an eco-friendly IoTs technology startup in Hong Kong. I am also an inventor with patents in sustainable energy & negative carbon-related technologies.

For more details about me, please reach out at xuan18.liu@connect.polyu.hk. I am applying for the Fall 2025 PhD program in EECS OR Cognitive-related fields! I can’t wait to contribute innovative ideas and productive work ethics to your team！

🌟 Major Papers & Projects

🤖 Topic 1: Multi-Agent LLM & LLM Cognition

• [1] Xuan Liu, Jie Zhang, Song Guo, Haoyang Shang, Chengxu Yang, Quanyan Zhu. “Exploring Prosocial Irrationality for LLM Agents: A Social Cognition View” ICLR-2025 (2024)

  

🛡️ Topic 2: AI Privacy, Attack & Defense Algorithms

• [2] Xuan Liu, Siqi Cai, Qihua Zhou, Song Guo, Ruibin Li, Kaiwei Lin. “Mjölnir: Breaking the Shield of Perturbation-Protected Gradients via Adaptive Diffusion” AAAI-2025 (2024) Access Code

  

• [3] Xuan Liu, Siqi Cai, Lin Li, Rui Zhang, Song Guo. “MGIA: Mutual Gradient Inversion Attack in Multi-Modal Federated Learning” AAAI-2023 (2023) Access Code

  

• [4] Xuan Liu, Siqi Cai, Renjie He, Jingling Yuan. “Mutual Gradient Inversion: Unveiling Privacy Risks of Federated Learning on Multi-modal Signals” IEEE Signal Processing Letters (2024)

🌱 Topic 3: AIoTs & Eco-friendly Invented Product

• Chinese Patent

  CN 109589733 B: An environmentally friendly outdoor dust reduction device using solar thermal energy.

  

• Newly invented Pre-sale Product “GreenOxy”

  GreenOxy-A Living Air Purifier: My newly designed, innovative air purifier. Initially hand-crafted, it is now available for pre-sale. This unique product combines advanced technology with natural elements, bringing vitality and serenity to your daily life.

  

• For More Information, Please Visit My Start-up Company Website:
  https://breathingcore.com

📣 Recent Activities

2025-4-26 CST 3pm-5:30pm [Poster] :
🖼️ Venue: ICLR 2025 Poster Session, Singapore EXPO
🔗 Details: More information here
2025-3-17 CST 10am-11am [Invited Talk] :
🎯 Topic: 大模型新视角：大模型幻觉 ⇒ 高级智能?
🗓️ Location: 北京通用人工智能研究院 (Beijing Institute for General Artificial Intelligence), 2201 Meeting Room
🔗 Details: More information here
2025-3-01 EST 12pm-2:30pm [Poster]:
🖼️ Venue: AAAI 2025 Poster Session, Philadelphia, Pennsylvania, at the Pennsylvania Convention Center
🔗 Details: More information here
2024-12-05 & 06 CST [Entrepreneurship Day Booth]:
🖼️ Venue: Hong Kong Entrepreneur Day (E-Day) PolyU Booth, Hong Kong Convention and Exhibition Centre
🔗 Details: More information here

🚀 What’s New

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 Incubation 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.
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.

🌍 Moments