Zhiyong Wang

I am currently a visiting Ph.D. student at Cornell University, where I am privileged to be advised by Prof. Wen Sun. I am a third-year Ph.D. candidate in the Department of Computer Science & Engineering , The Chinese University of Hong Kong (CUHK), fortunate to be supervised by Prof. John C.S. Lui (ACM/IEEE fellow). Before joining CUHK, I obtained my bachelor's degree from the Advanced Class in Mathematics and Physics for Information Science at Huazhong University of Science and Technology (HUST) in 2021.

From June 2023 to August 2023, I interned at Microsoft Research Asia Theory Center, where I fortunately worked with Dr. Wei Chen (IEEE fellow, Director of Microsoft Research Asia Theory Center) and Dr. Siwei Wang. I also feel very lucky to cooperate closely with many other excellent researchers, including Prof. Dongruo Zhou from Indiana University, Prof. Shuai Li from Shanghai Jiao Tong University, and Dr. Tong Yu from Adobe Research.

I am interested in multi-armed bandits, reinforcement learning, and their applications (e.g., recommendation systems, computer networks, etc). If you share common interests and would like to explore collaboration or simply have a discussion, feel free to contact me.

I am actively seeking a postdoctoral position beginning in August 2025!

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Preprints
Variance-Dependent Regret Bounds for Non-stationary Linear Bandits [arXiv]
Zhiyong Wang, Jize Xie, Yi Chen, John C.S. Lui, and Dongruo Zhou.
Publications (* denotes equal contribution)
Quantifying the Merits of Network-Assist Online Learning in Optimizing Network Protocols
Xiangxiang Dai*, Zhiyong Wang*, Jiancheng Ye, and John C.S. Lui.
Accepted in the IEEE/ACM International Symposium on Quality of Service (IWQoS), 2024 
Online Optimal Service Caching for Multi-Access Edge Computing: A Constrained Multi-Armed Bandit Optimization Approach
Weibo Chu, Xiaoyan Zhang, Xinming Jia, John C.S. Lui, and Zhiyong Wang.
[J] Computer Networks. 2024. 
Federated Contextual Cascading Bandits with Asynchronous Communication and Heterogeneous Users [arXiv]
Hantao Yang, Xutong Liu, Zhiyong Wang, Hong Xie, John C.S. Lui, Defu Lian, and Enhong Chen.
Accepted in the AAAI Conference on Artificial Intelligence (AAAI), 2024  
Learning Context-Aware Probabilistic Maximum Coverage Bandits: A Variance-Adaptive Approach
Xutong Liu, Jinhang Zuo, Junkai Wang, Zhiyong Wang, Yuedong Xu, and John C.S. Lui.
Accepted in IEEE International Conference on Computer Communications (INFOCOM), 2024  
Online Clustering of Bandits with Misspecified User Models [arXiv] [OpenReview]
Zhiyong Wang, Jize Xie, Xutong Liu, Shuai Li, and John C.S. Lui.
Accepted in Thirty-seventh Conference on Neural Information Processing Systems (NeurIPS), 2023  
Online Corrupted User Detection and Regret Minimization [arXiv] [OpenReview]
Zhiyong Wang, Jize Xie, Tong Yu, Shuai Li, and John C.S. Lui.
Accepted in Thirty-seventh Conference on Neural Information Processing Systems (NeurIPS), 2023  
Adversarial Attacks on Online Learning to Rank with Click Feedback [arXiv] [OpenReview]
Jinhang Zuo, Zhiyao Zhang, Zhiyong Wang , Shuai Li, Mohammad Hajiesmaili, and Adam Wierman.
Accepted in Thirty-seventh Conference on Neural Information Processing Systems (NeurIPS), 2023  
Efficient Explorative Key-term Selection Strategies for Conversational Contextual Bandits [arXiv]
Zhiyong Wang, Xutong Liu, Shuai Li, and John C.S. Lui.
Proceedings of the AAAI Conference on Artificial Intelligence (AAAI), 2023  
Awards
  • Full Postgraduate Studentship, CUHK, 2021-2025
  • National Scholarship, the Ministry of Education of China, 2017-2018, 2018-2019
  • Outstanding Graduates of Huazhong University of Science and Technology, HUST, 2021
  • Outstanding Undergraduates in terms of Academic Performance, HUST, 2017-2021
  • Scholarship for excellent academic performance, HUST, 2019-2020
  • Merit Student, HUST, 2017-2018, 2018-2019
  • Scholarship for outstanding academic performance for Freshmen, HUST, 2018
Teaching Assistantships
  • CSCI2040: Introduction to Python, CUHK, Fall 2021, Fall 2022, Spring 2023, Fall 2023
  • CSCI1510: Computer Principles and C Programming, CUHK, Spring 2022