About Projects CV


cuijiaxun AT utexas DOT edu

Jiaxun Cui (崔佳勋)

cuijiaxun AT utexas DOT edu / GitHub / CV / Google Scholar / LinkedIn

I'm a fourth-year Electrical and Computer Engineering PhD student at The University of Texas at Austin, with my ambitious goal of building a general AI for human benefits. I am privileged to work with Prof.Peter Stone at the Learning Agent Research Group (LARG). Priviously I completed my undergraduate study at Shanghai Jiao Tong University with a major in Mechanical Engineering (Robotics). I broadened my practical AI skillset through an enriching internship under Xiaomeng Yang and Yuandong Tian at Meta FAIR Labs in Summer 2022. Besides research, I enjoy Tennis, Cello and Rap Music.


My current research interests include:

  • Multi-agent (Reinforcement) Learning
  • Game Theory
  • Robotics

I coordinate Reinforcement Learning Reading Group (RLRG) at UT.

Academic Services: reviewer for NeurIPS, ICML, ICLR, AAMAS, CVPR, RA-L


MACTA: A Multi-agent Reinforcement Learning Approach for Cache Timing Attacks and Detection
Jiaxun Cui, Xiaomeng yang*, Mulong Luo*, Geunbae Lee*, Peter Stone, Hsien-Hsin S Lee, Benjamin Lee, G Edward Suh, Wenjie Xiong*, Yuandong Tian*
International Conference on Learning Representations (ICLR), 2023
[paper] [code]

MACTA detectors can generalize to a heuristic attack not exposed in training with a 97.8% detection rate and reduce the attack bandwidth of adaptive attackers by 20% on average. In the meantime, MACTA attackers are qualitatively more effective than other attacks studied, and the average evasion rate of MACTA attackers against an unseen state-of-the-art detector can reach up to 99%.

Coopernaut: End-to-End Driving with Cooperative Perception for Networked Vehicles
Jiaxun Cui*, Hang Qiu*, Dian Chen, Peter Stone, Yuke Zhu
IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 2022
[paper] [project page] [code]

There are dangerous scenarios where single optical based sensor are occluded. We develop a series of benchmark scenarios in the CARLA simulator where cooperative perception can make big difference in the decisions made by the autonomous vehicles.

Meta-Learning for Multiround Chinese Standard Mahjong Game

Chinese Standard Mahjong Game is a 4-player zero-sum imperfect information game. While in the formal competitions of the mahjong game, a player will compete with the other opponents for a fixed number of rounds, and then the relative cumulative reward/points are compared. It is no longer a zero-sum game and the agents only care about a relative better performance than other players. This competition mechanism induces multi-round tactics. For example, an agent may play conservatively to secure its ranking or play riskly when it is left behind.

Scalable Multiagent Driving Policies For Reducing Traffic Congestion
Jiaxun Cui, William Macke, Harel Yedidsion, Aastha Goyal, Daniel Urielli, Peter Stone
Oral Presentation, International Conference on Autonomous Agents and Multiagent Systems (AAMAS), 2021
[paper] [code]

In the mordern highway system, the issue of conjestions brings inefficiency in traffic throughput and also cause waste of energy consumption. In this project, we employed deep Reinforcement Learning method to alleviate stop-and-go waves arosed from merging. We explored two aspects of multi-agent learning: Centralized and Distributed. Evaluting only average speed and throughput efficiency could be toublesome because the two metrics may not be improved at the same time. Thus, we developed a new metric: time delay for a certain number of vehicles to enter and exit the networks.