Title
Learning Domain Invariant Representations in Goal-conditioned Block MDPs.
Abstract
Deep Reinforcement Learning (RL) is successful in solving many complex Markov Decision Processes (MDPs) problems. However, agents often face unanticipated environmental changes after deployment in the real world. These changes are often spurious and unrelated to the underlying problem, such as background shifts for visual input agents. Unfortunately, deep RL policies are usually sensitive to these changes and fail to act robustly against them. This resembles the problem of domain generalization in supervised learning. In this work, we study this problem for goal-conditioned RL agents. We propose a theoretical framework in the Block MDP setting that characterizes the generalizability of goal-conditioned policies to new environments. Under this framework, we develop a practical method PA-SkewFit that enhances domain generalization. The empirical evaluation shows that our goal-conditioned RL agent can perform well in various unseen test environments, improving by 50\% over baselines.
Year
Venue
DocType
2021
Annual Conference on Neural Information Processing Systems
Conference
ISSN
Citations 
PageRank 
NeurIPS2021
0
0.34
References 
Authors
0
6
Name
Order
Citations
PageRank
Beining Han100.68
Chongyi Zheng200.34
Harris Chan300.34
Keiran Paster400.34
Michael G. Zhang542.10
Lei Jimmy Ba68887296.55