Dr. Hengzhu Liu
Assistant Professor Master Supervisor
Email: hzliu@cityu.edu.mo
Tel: (853)85902426
Office address: Room S401, Stanley Ho Building, City University of Macau (Taipa)
Educational experience
2025 Doctor of Modern Technology Management, Zhongnan University of Economics and Law, Hubei, China
2021 Master of Management Science and Engineering, Zhongnan University of Economics and Law, Hubei, China
2018 Bachelor of Information Management and Information Systems, Henan Normal University, Henan, China
Incumbent
Assistant Professor, Faculty of Data Science, City University of Macau
Research interests
Machine Unlearning
Artificial Intelligence Security
Privacy Protection
Research and publications
1. Hengzhu Liu, Ping Xiong, Tianqing Zhu, Philip S. Yu. A Survey on Machine Unlearning: Techniques and New Emerged Privacy Risks. Journal of Information Security and Applications. 90, 104010, 2025. (JCR-Q2, IF=4.2)
2. Hengzhu Liu, Ping Xiong, Dawei Jin, Lingzhi Yi. Change Point Detection and Trend Analysis for Financial Time Series. The 9th International Conference on Big Data Computing and Communications (BigCom). IEEE, Qionghai, China. 2023: 134-141.
3. Meng Chen, Hengzhu Liu, Huanhuan Chi, Ping Xiong. Heterogeneous ensemble federated learning with GAN-based privacy preservation. IEEE Transactions on Sustainable Computing, 9(4), 591-601, 2024. (JCR-Q2, IF=3.3)
4. Chen Chen, Hengzhu Liu, Huanhuan Chi, Ping Xiong. Enhancing Privacy in Machine Unlearning: Posterior Perturbation against Membership Inference Attack. The 24rd International Conference on Algorithms and Architectures for Parallel Processing (ICA3PP). Macau, China, 2024.
5. Huanhuan Chi, Ping Xiong, Hengzhu Liu, Xiao Ma, Tianqing Zhu. Survey on incentive-driven federated learning: Privacy and security. Chinese Journal of Network and Information Security. 11(03), 19-44, 2025.
6. Ping Xiong, Guirong Li, Hengzhu Liu, Yiyi Hu, Dawei Jin. Decentralized privacy-preserving truth discovery for crowd sensing. Information Sciences. 632, 730-741, 2023. (JCR-Q1, IF=6.8)
