Decoupling Exploration and Exploitation in Reinforcement Learning

• URL: http://arxiv.org/abs/2107.08966v1
• Date: Mon, 19 Jul 2021 15:31:02 GMT
• Title: Decoupling Exploration and Exploitation in Reinforcement Learning
• Authors: Lukas Sch\"afer, Filippos Christianos, Josiah Hanna, Stefano V. Albrecht
• Abstract summary: We propose Decoupled RL (DeRL) which trains separate policies for exploration and exploitation. We evaluate DeRL algorithms in two sparse-reward environments with multiple types of intrinsic rewards.
• Score: 8.946655323517092
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Intrinsic rewards are commonly applied to improve exploration in reinforcement learning. However, these approaches suffer from instability caused by non-stationary reward shaping and strong dependency on hyperparameters. In this work, we propose Decoupled RL (DeRL) which trains separate policies for exploration and exploitation. DeRL can be applied with on-policy and off-policy RL algorithms. We evaluate DeRL algorithms in two sparse-reward environments with multiple types of intrinsic rewards. We show that DeRL is more robust to scaling and speed of decay of intrinsic rewards and converges to the same evaluation returns than intrinsically motivated baselines in fewer interactions.

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