Wang Chi Cheung
Wang Chi Cheung
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Assistant Professor,
Industrial Systems Engineering & Management,
National University of Singapore.
Hi! I am an assistant professor at the Department of Industrial Systems Engineering & Management, the National University of Singapore. I received my PhD in Operations Research from the Operations Research Center, Massachusetts Institute of Technology, supervised by Prof David Simchi-Levi. More about me in my CV.
My research interests are online learning and resource allocation, which lie in the intersection of Operations Research (OR) and Machine Learning (ML). See Selected Works below, and Research Interest.
News
(Sept 2026) 1 paper accepted at Operations Research. Our algorithm achieves (nearly)-the best possible performance guarantee in online reusable resource allocation, under arbitrary non-stationarity. The main challenge lies in user-dependent usage durations. Congratulations Tianming!
(Sept 2026) 1 paper accpeted at NeurIPS 2026. We sharply characterize the amount of exploratoin saved, when we only aim to identify a good enough arm as compared to an optimal arm. Congratulations Zitian!
(Aug 2026) I will serve as an Area Chair at ICLR 2027 and an Senior Program Committee at AAAI 2027.
(June 2026) With my PhD student Zitian, we studied a satisficing objective on multi-armed bandits and online reinforcement learning (RL).
(May 2026) 1 paper accepted at ICML 2026. We studied how (possibly bias) offline data helps reinforcement learning, even when we do not know the magnitude of the bias. Congratulations Lixing and Jiashuo!
Selected Works
Tianming Huo*, Wang Chi Cheung, “Online Reusable Resource Allocations with Multi-class Arrivals”, Operations Research, 2026.
Zitian Li*, Wang Chi Cheung, "Closing the Gap on the Sample Complexity of 1-Identificaiton", NeurIPS 2026.
Wang Chi Cheung, Guodong Lyu, “Online Planning in Non-stationary Environments”, Operations Research 2025. Slides
Xilin Zhang*, Wang Chi Cheung, “Online Allocation of Reusable Resources in Non-stationary Environments”, Mathematics of Operations Research 2025.
Wang Chi Cheung, Lixing Lyu*, “Leveraging (Biased) Information: Multi-armed Bandits with Offline Data”, ICML 2024.
Accepted with Spotlight, top 3.5% submission. Slides
Guodong Lyu, Wang Chi Cheung, Chung Piaw Teo, Hai Wang, “Multi-objective stochastic optimization: A case of real-time matching in ride-sourcing markets”, Manufacturing & Service Operations Management, 2024.
"*" indicates my PhD student.
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