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Policy-Guided Diffusion
April 10, 2024, 4:42 a.m. | Matthew Thomas Jackson, Michael Tryfan Matthews, Cong Lu, Benjamin Ellis, Shimon Whiteson, Jakob Foerster
cs.LG updates on arXiv.org arxiv.org
Abstract: In many real-world settings, agents must learn from an offline dataset gathered by some prior behavior policy. Such a setting naturally leads to distribution shift between the behavior policy and the target policy being trained - requiring policy conservatism to avoid instability and overestimation bias. Autoregressive world models offer a different solution to this by generating synthetic, on-policy experience. However, in practice, model rollouts must be severely truncated to avoid compounding error. As an alternative, …
abstract agents arxiv behavior bias cs.ai cs.lg cs.ro dataset diffusion distribution leads learn offline policy prior shift solution type world world models
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