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Overestimation, Overfitting, and Plasticity in Actor-Critic: the Bitter Lesson of Reinforcement Learning
March 4, 2024, 5:41 a.m. | Michal Nauman, Micha{\l} Bortkiewicz, Mateusz Ostaszewski, Piotr Mi{\l}o\'s, Tomasz Trzci\'nski, Marek Cygan
cs.LG updates on arXiv.org arxiv.org
Abstract: Recent advancements in off-policy Reinforcement Learning (RL) have significantly improved sample efficiency, primarily due to the incorporation of various forms of regularization that enable more gradient update steps than traditional agents. However, many of these techniques have been tested in limited settings, often on tasks from single simulation benchmarks and against well-known algorithms rather than a range of regularization approaches. This limits our understanding of the specific mechanisms driving RL improvements. To address this, we …
abstract actor actor-critic agents arxiv cs.lg efficiency forms gradient overfitting policy regularization reinforcement reinforcement learning sample type update
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