Hi, I'm Jiachen Li (李嘉琛). I am a third-year PhD student at UC Santa Barbara advised by William Wang.
My current research interests broadly include Deep RL, and Embodied AI.
I am the Team Lead of Team GauchoAI. We won the 2nd place🥈 at the Alexa Prize SimBot Challenge! We made it to the final phase by ranking No.1 on the leaderboard!
My last project designed a closed-form solution to the policy improvement step for Offline RL.
I am open to collaboration on any research problem that will reveal new insights to the Machine Learning community.
Publications on AI/ML
Mastering Robot Manipulation with Multimodal Prompts Through Pretraining and Multi-task Finetuning
In Submission [arxiv]
Jiachen Li, Qiaozi Gao, Michael Johnston, Xiaofeng Gao, Xuehai He, Suhaila Shakiah, Hangjie Shi, Reza Ghanadan, William Yang Wang
Offline Reinforcement Learning with Closed-Form Policy Improvement Operators
ICML 2023 [arxiv]
Offline RL Workshop at NeurIPS, 2022
Jiachen Li*, Edwin Zhang*, Ming Yin, Qinxun Bai, Yu-Xiang Wang, William Yang Wang
Causal Balancing for Domain Generalization
ICLR 2023 [PDF]
ICML 2022 Workshop on Spurious Correlations, Invariance, and Stability
Xinyi Wang, Michael Saxon, Jiachen Li, Hongyang Zhang, Kun Zhang, William Yang Wang
Off-policy Reinforcement Learning with Optimistic Exploration and Distribution Correction
Deep RL workshop, NeurIPS 2022 [PDF]
Jiachen Li, Shuo Cheng, Zhenyu Liao, Huayan Wang, William Yang Wang, Qinxun Bai
Publications on Wireless Communications during undergrad
A Game Theoretic Approach for Backscatter-Aided Relay Communications in Hybrid Radio Networks
in Proceedings of IEEE GLOBECOM, 2018 [PDF]
Jiachen Li, Shiming Gong, Chengming Li, Jing Xu, Xiaoxia Huang
Robust Spectrum Monitoring in Cognitive Radio Networks with Uncertain Traffic Information
IEEE Access [PDF]
Wenbo Xu, Jing Xu, Jiachen Li, Wei Liu, Shiming Gong, Kai Zeng
Robust Radio Mode Selection in Wirelessly Powered Communications with Uncertain Channel Information
in Proceedings of IEEE GLOBECOM, 2017 [PDF]
Jiachen Li, Jing Xu, Shiming Gong, Xiaoxia Huang, Ping Wang
Cooperative Multi-relay Assisted Multicast Beamforming in Wirelessly Powered Communications
in Proceedings of IEEE CIT, 2017 [PDF]
Jiachen Li, Yue Mi, Shiming Gong, Jing Xu, Xiaoxia Huang, Yanyan Shen
Robust Optimal Spectrum Patrolling for Passive Monitoring in Cognitive Radio Networks
in Proceedings of IEEE CIT, 2017 [PDF]
Jiachen Li, Jing Xu, Wei Liu, Shiming Gong, Kai Zeng