Imitation Learning by Reinforcement LearningDownload PDF

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Sep 29, 2021 (edited Oct 05, 2021)ICLR 2022 Conference Blind SubmissionReaders: Everyone
  • Keywords: reinforcement learning, imitation learning, Markov Decision Process, continuous control
  • Abstract: Imitation learning algorithms learn a policy from demonstrations of expert behavior. We show that, for deterministic experts, imitation learning can be done by reduction to reinforcement learning with a stationary reward. Our theoretical analysis both certifies the recovery of expert reward and bounds the total variation distance between the expert and the imitation learner, showing a link to adversarial imitation learning. We conduct experiments which confirm that our reduction works well in practice for continuous control tasks.
  • One-sentence Summary: For deterministic experts, you can do imitation learning by calling an RL solver once, with a stationary reward signal.
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