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- W3036693463 abstract "We study the Stein Variational Gradient Descent (SVGD) algorithm, which optimises a set of particles to approximate a target probability distribution $pipropto e^{-V}$ on $mathbb{R}^d$. In the population limit, SVGD performs gradient descent in the space of probability distributions on the KL divergence with respect to $pi$, where the gradient is smoothed through a kernel integral operator. In this paper, we provide a novel finite time analysis for the SVGD algorithm. We provide a descent lemma establishing that the algorithm decreases the objective at each iteration, and rates of convergence for the average Stein Fisher divergence (also referred to as Kernel Stein Discrepancy). We also provide a convergence result of the finite particle system corresponding to the practical implementation of SVGD to its population version." @default.
- W3036693463 created "2020-06-25" @default.
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- W3036693463 date "2020-06-17" @default.
- W3036693463 modified "2023-09-27" @default.
- W3036693463 title "A Non-Asymptotic Analysis for Stein Variational Gradient Descent" @default.
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