Multi-task Hierarchical Adversarial Inverse Reinforcement Learning
Abstract
Multi-task Imitation Learning (MIL) aims to train a policy capable of performing a distribution of tasks based on multi-task expert demonstrations, which is essential for general-purpose robots. Existing MIL algorithms suffer from low data efficiency and poor performance on complex long-horizontal tasks. We develop Multi-task Hierarchical Adversarial Inverse Reinforcement Learning (MH-AIRL) to learn hierarchically-structured multi-task policies, which is more beneficial for compositional tasks with long horizons and has higher expert data efficiency through identifying and transferring reusable basic skills across tasks. To realize this, MH-AIRL effectively synthesizes context-based multi-task learning, AIRL (an IL approach), and hierarchical policy learning. Further, MH-AIRL can be adopted to demonstrations without the task or skill annotations (i.e., state-action pairs only) which are more accessible in practice. Theoretical justifications are provided for each module of MH-AIRL, and evaluations on challenging multi-task settings demonstrate superior performance and transferability of the multi-task policies learned with MH-AIRL as compared to SOTA MIL baselines.
Cite
@article{arxiv.2305.12633,
title = {Multi-task Hierarchical Adversarial Inverse Reinforcement Learning},
author = {Jiayu Chen and Dipesh Tamboli and Tian Lan and Vaneet Aggarwal},
journal= {arXiv preprint arXiv:2305.12633},
year = {2023}
}
Comments
This paper is accepted at ICML 2023. arXiv admin note: text overlap with arXiv:2210.01969