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Self-Imitation Advantage Learning

2020/12/22 by Johan Ferret, Olivier Pietquin, Ferret, Johan +3 · 1 citation
Computer Science · #Adaptive Dynamic Programming Control #FOS: Computer and information sciences #Machine Learning (cs.LG) #Reinforcement Learning in Robotics #cs.LG

paper · pdf · doi:10.48550/arxiv.2012.11989

AAMAS 2021

arxiv created 2020/12/22 · openalex publication_date 2020/12/22 · arxiv updated 2020/12/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Self-imitation learning is a Reinforcement Learning (RL) method that encourages actions whose returns were higher than expected, which helps in hard exploration and sparse reward problems. It was shown to improve the performance of on-policy actor-critic methods in several discrete control tasks. Nevertheless, applying self-imitation to the mostly action-value based off-policy RL methods is not straightforward. We propose SAIL, a novel generalization of self-imitation learning for off-policy RL, based on a modification of the Bellman optimality operator that we connect to Advantage Learning. Crucially, our method mitigates the problem of stale returns by choosing the most optimistic return estimate between the observed return and the current action-value for self-imitation. We demonstrate the empirical effectiveness of SAIL on the Arcade Learning Environment, with a focus on hard exploration games.

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