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An optimal control perspective on diffusion-based generative modeling
March 27, 2024, 4:43 a.m. | Julius Berner, Lorenz Richter, Karen Ullrich
cs.LG updates on arXiv.org arxiv.org
Abstract: We establish a connection between stochastic optimal control and generative models based on stochastic differential equations (SDEs), such as recently developed diffusion probabilistic models. In particular, we derive a Hamilton-Jacobi-Bellman equation that governs the evolution of the log-densities of the underlying SDE marginals. This perspective allows to transfer methods from optimal control theory to generative modeling. First, we show that the evidence lower bound is a direct consequence of the well-known verification theorem from control …
abstract arxiv control cs.lg differential diffusion equation evolution generative generative modeling generative models hamilton math.oc modeling perspective stat.ml stochastic type
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