Latent Space Geometric Statistics

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Deep generative models, e.g., variational autoencoders and generative adversarial networks, result in latent representation of observed data. The low dimensionality of the latent space provides an ideal setting for analysing high-dimensional data that would otherwise often be infeasible to handle statistically. The linear Euclidean geometry of the high-dimensional data space pulls back to a nonlinear Riemannian geometry on latent space where classical linear statistical techniques are no longer applicable. We show how analysis of data in their latent space representation can be performed using techniques from the field of geometric statistics. Geometric statistics provide generalisations of Euclidean statistical notions including means, principal component analysis, and maximum likelihood estimation of parametric distributions. Introduction to estimation procedures on latent space are considered, and the computational complexity of using geometric algorithms with high-dimensional data addressed by training a separate neural network to approximate the Riemannian metric and cometric tensor capturing the shape of the learned data manifold.

Original languageEnglish
Title of host publicationPattern Recognition. ICPR International Workshops and Challenges, 2021, Proceedings
EditorsAlberto Del Bimbo, Rita Cucchiara, Stan Sclaroff, Giovanni Maria Farinella, Tao Mei, Marco Bertini, Hugo Jair Escalante, Roberto Vezzani
Number of pages16
PublisherSpringer
Publication date2021
Pages163-178
ISBN (Print)9783030687793
DOIs
Publication statusPublished - 2021
Event25th International Conference on Pattern Recognition Workshops, ICPR 2020 - Virtual, Online
Duration: 10 Jan 202115 Jan 2021

Conference

Conference25th International Conference on Pattern Recognition Workshops, ICPR 2020
ByVirtual, Online
Periode10/01/202115/01/2021
SeriesLecture Notes in Computer Science
Volume12666
ISSN0302-9743

Bibliographical note

Publisher Copyright:
© 2021, Springer Nature Switzerland AG.

ID: 306680294