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MD-NOMAD: Mixture density nonlinear manifold decoder for emulating stochastic differential equations and uncertainty propagation
April 25, 2024, 7:42 p.m. | Akshay Thakur, Souvik Chakraborty
cs.LG updates on arXiv.org arxiv.org
Abstract: We propose a neural operator framework, termed mixture density nonlinear manifold decoder (MD-NOMAD), for stochastic simulators. Our approach leverages an amalgamation of the pointwise operator learning neural architecture nonlinear manifold decoder (NOMAD) with mixture density-based methods to estimate conditional probability distributions for stochastic output functions. MD-NOMAD harnesses the ability of probabilistic mixture models to estimate complex probability and the high-dimensional scalability of pointwise neural operator NOMAD. We conduct empirical assessments on a wide array of …
abstract architecture arxiv cs.lg decoder differential framework manifold probability propagation stochastic type uncertainty
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