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Evolutionary Action Selection for Gradient-based Policy Learning

2022/01/12 by Yan Ma, Ma, Yan, Tianxing Liu +9 · 1 citation
Computer Science · #Evolutionary Algorithms and Applications #FOS: Computer and information sciences #Machine Learning (cs.LG) #Machine Learning and Data Classification #Neural and Evolutionary Computing (cs.NE) #Reinforcement Learning in Robotics #cs.LG #cs.NE

paper · pdf · doi:10.48550/arxiv.2201.04286

openalex publication_date 2022/01/12 · arxiv created 2022/09/16 · arxiv updated 2022/09/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Evolutionary Algorithms (EAs) and Deep Reinforcement Learning (DRL) have recently been integrated to take the advantage of the both methods for better exploration and exploitation.The evolutionary part in these hybrid methods maintains a population of policy networks.However, existing methods focus on optimizing the parameters of policy network, which is usually high-dimensional and tricky for EA.In this paper, we shift the target of evolution from high-dimensional parameter space to low-dimensional action space.We propose Evolutionary Action Selection-Twin Delayed Deep Deterministic Policy Gradient (EAS-TD3), a novel hybrid method of EA and DRL.In EAS, we focus on optimizing the action chosen by the policy network and attempt to obtain high-quality actions to promote policy learning through an evolutionary algorithm. We conduct several experiments on challenging continuous control tasks.The result shows that EAS-TD3 shows superior performance over other state-of-art methods.

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