I am a fourth-year PhD student in the Department of Operations Research at Columbia University. I am very fortunate to work with Prof. Garud Iyengar, Prof. Jay Sethuraman, and Prof. Hongseok Namkoong. From 2019 to 2021, I spent two years at Georgia Tech ISyE as a graduate student studying statistics and mathematics. I also completed an undergraduate degree in economics from East China Normal University, while working full-time (joined in 2016 as a founding member) at a FinTech startup (NASDAQ: QFIN and HKEX:3660) in China, focusing on ML problems.

Broadly, my research develops models and algorithms for reliable and responsbile decision making tailored for modern operations. I use techniques from optimization, stochastic modeling, learning theory, and game theory.

Papers

Here are my Semantic and Google scholar profiles.

Adaptive Labeling for Efficient Out-of-distribution Model Evaluation

Daksh Mittal^*, Yuanzhe Ma^*, Shalmali Joshi, Hongseok Namkoong
NeurIPS 2024
[paper link]

Transient Analysis of the Join-the-Shortest-Queue System

Yuanzhe Ma, Siva Theja Maguluri

The Distributional Effects of “Fulfilled By Amazon” (FBA)

Garud Iyengar^*, Yuanzhe Ma^*, Thomas J. Rivera^*, Fahad Saleh^*, Jay Sethuraman^*
[SSRN]

Minimax Optimal Estimation of Stability Under Distribution Shift

Hongseok Namkoong^*, Yuanzhe Ma^*, Peter W. Glynn
[arxiv]
Minor revision, Operations Research

Hybrid Random Features

Krzysztof Choromanski^*, Haoxian Chen^*, Han Lin^*, Yuanzhe Ma^*, Arijit Sehanobish^*, Deepali Jain, Michael S Ryoo, Jake Varley, Andy Zeng, Valerii Likhosherstov, Dmitry Kalashnikov, Vikas Sindhwani, Adrian Weller
ICLR 2022
[paper link][code][talk][slides]

Courses

Courses I’ve taught as a teaching assistant:

• IEOR 4111 Operations Consulting (MS in Management Science and Engineering core course, taught by Prof. Soulaymane Kachani)
• IEOR 4703 Monte Carlo Simulation (MS in Financial Engineering core course, taught by Prof. Ali Hirsa)