About
I am a fourth-year PhD student at ALGO Lab, School of Computing and Data Science, the University of Hong Kong. I am honored to be advised by Prof. Zhiyi Huang. I obtained my BSc in Mathematics also from the University of Hong Kong, where I was honored to be supervised by Dr. Wong, Tak Kwong for my final year project in optimal control theory.
My current research interest lies in online algorithms and approximation algorithms. Specifically, I am interested in classic stopping time problems including Matroid Secretary, Pandora's Box Problem and Prophet Inequality. My focuses include the trade-off between exploration and exploitation, and the adaptivity gap in online decision making. I won ESA24' Best Paper Award (Track S) and COCOON24' Best Student Paper Award. My research works are avaible at DBLP.
Welcome to reach me at zxzhu@cs.hku.hk or zxzhu999@gmail.com for any communications 😉
News
I will join Cubist Sytematic Strategies (HK) as a quant research intern from April 2026.
I'm visiting John Hopcroft Center, SJTU during January to April, hosted by Dr. Yuhao Zhang.
I will attend FOCS 2025 and two satellite events A Celebration of TCS & Trends in Approximation and Online Algorithm during Dec 10 - 20. Welcome to meet me at Sydney.
My papar with Nikhil Bansal and Zhiyi Huang, Optimal 4-Approximation for the Correlated Pandora's Problem, was accepted to FOCS 2025.
Selected Publications
View All →Optimal 4-Approximation for the Correlated Pandora's Problem
Nikhil Bansal, Zhiyi Huang, Zixuan Zhu
66th IEEE Annual Symposium on Foundations of Computer Science, (FOCS)
Laminar Matroid Secretary: Greedy Strikes Back
Zhiyi Huang, Zahra Parsaeian, Zixuan Zhu
32nd Annual European Symposium on Algorithms, (ESA)