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Vihang Patil

2 accepted papers

2022

Align-RUDDER: Learning From Few Demonstrations by Reward Redistribution

ICML 2022oral

Reinforcement learning algorithms require many samples when solving complex hierarchical tasks with sparse and delayed rewards. For such complex tasks, the recently proposed RUDDER uses reward redistribution to leverage steps in the Q-function that are associated with accomplishing sub-tasks. Howeve…

2022

History Compression via Language Models in Reinforcement Learning

ICML 2022spotlight

In a partially observable Markov decision process (POMDP), an agent typically uses a representation of the past to approximate the underlying MDP. We propose to utilize a frozen Pretrained Language Transformer (PLT) for history representation and compression to improve sample efficiency. To avoid tr…