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The Role of Coverage in Online Reinforcement Learning. (arXiv:2210.04157v1 [cs.LG])
Oct. 11, 2022, 1:15 a.m. | Tengyang Xie, Dylan J. Foster, Yu Bai, Nan Jiang, Sham M. Kakade
stat.ML updates on arXiv.org arxiv.org
Coverage conditions -- which assert that the data logging distribution
adequately covers the state space -- play a fundamental role in determining the
sample complexity of offline reinforcement learning. While such conditions
might seem irrelevant to online reinforcement learning at first glance, we
establish a new connection by showing -- somewhat surprisingly -- that the mere
existence of a data distribution with good coverage can enable sample-efficient
online RL. Concretely, we show that coverability -- that is, existence of a …
arxiv online reinforcement learning reinforcement reinforcement learning role
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