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arXiv · 2201.09635

State-Conditioned Adversarial Subgoal Generation

Vivienne Huiling Wang·Joni Pajarinen·Tinghuai Wang·Joni-Kristian Kämäräinen
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Abstract

Hierarchical reinforcement learning (HRL) proposes to solve difficult tasks by performing decision-making and control at successively higher levels of temporal abstraction. However, off-policy HRL often suffers from the problem of a non-stationary high-level policy since the low-level policy is constantly changing. In this paper, we propose a novel HRL approach for mitigating the non-stationarity by adversarially enforcing the high-level policy to generate subgoals compatible with the current instantiation of the low-level policy. In practice, the adversarial learning is implemented by training a simple state-conditioned discriminator network concurrently with the high-level policy which determines the compatibility level of subgoals. Comparison to state-of-the-art algorithms shows that our approach improves both learning efficiency and performance in challenging continuous control tasks.

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Vivienne Huiling Wang, Joni Pajarinen, Tinghuai Wang, Joni-Kristian Kämäräinen. 2022-01-24. State-Conditioned Adversarial Subgoal Generation. https://arxiv.org/abs/2201.09635

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