报告人：Zhi Chen, Assistant Professor, The Chinese University of Hong Kong
报告时间：2024年11月15日上午09:30
报告地点：机械楼D530
报告摘要：
We study the multi-period hub location problem with uncertain periodic demands. In particular, we construct a nested ambiguity set that characterizes uncertain periodic demands via a general multivariate time series model, and to ensure stable periodic cost flows, we propose to constrain each expected periodic cost within a budget while maximizing the robustness level (i.e., the size) of the ambiguity set. Statistically, the nested ambiguity set ensures the model's solution to enjoy finite-sample performance guarantees under certain regularity conditions on the underlying process of the stochastic demand. Computationally, the uncapacitated model can be efficiently solved via a bisection search algorithm that solves (in each iteration) a mixed-integer conic program. Numerical experiments demonstrate the attractiveness and competitiveness of our proposed modeling and solution approaches.
个人简介：
Zhi Chen is an Associate Research Fellow at CUHK Shenzhen Research Institute and an Assistant Professor in the CUHK Business School, the Chinese University of Hong Kong. His research interests include (1) developing models and designing algorithms for decision-making under uncertainty with different levels of data availability as well as applications in business, economics, finance, and operations; (2) how to compete or cooperate in joint activities such as resource allocation and risk management. He worked in the City University of Hong Kong and received a Research Excellence Award from the College of Business.
