@kirk86

Flows for simultaneous manifold learning and density estimation

, and . (2020)cite arxiv:2003.13913Comment: Code at https://github.com/johannbrehmer/manifold-flow.

Abstract

We introduce manifold-modeling flows (MFMFs), a new class of generative models that simultaneously learn the data manifold as well as a tractable probability density on that manifold. Combining aspects of normalizing flows, GANs, autoencoders, and energy-based models, they have the potential to represent data sets with a manifold structure more faithfully and provide handles on dimensionality reduction, denoising, and out-of-distribution detection. We argue why such models should not be trained by maximum likelihood alone and present a new training algorithm that separates manifold and density updates. With two pedagogical examples we demonstrate how manifold-modeling flows let us learn the data manifold and allow for better inference than standard flows in the ambient data space.

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[2003.13913] Flows for simultaneous manifold learning and density estimation

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