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Zeroth-Order Sampling Methods for Non-Log-Concave Distributions: Alleviating Metastability by Denoising Diffusion
Feb. 29, 2024, 5:42 a.m. | Ye He, Kevin Rojas, Molei Tao
cs.LG updates on arXiv.org arxiv.org
Abstract: This paper considers the problem of sampling from non-logconcave distribution, based on queries of its unnormalized density. It first describes a framework, Diffusion Monte Carlo (DMC), based on the simulation of a denoising diffusion process with its score function approximated by a generic Monte Carlo estimator. DMC is an oracle-based meta-algorithm, where its oracle is the assumed access to samples that generate a Monte Carlo score estimator. Then we provide an implementation of this oracle, …
abstract arxiv cs.lg denoising diffusion distribution framework function math.pr math.st paper process queries sampling simulation stat.me stat.ml stat.th the simulation type
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