Structured Bayesian Gaussian process latent variable model
Machine Learning
2018-05-23 v1 Machine Learning
Abstract
We introduce a Bayesian Gaussian process latent variable model that explicitly captures spatial correlations in data using a parameterized spatial kernel and leveraging structure-exploiting algebra on the model covariance matrices for computational tractability. Inference is made tractable through a collapsed variational bound with similar computational complexity to that of the traditional Bayesian GP-LVM. Inference over partially-observed test cases is achieved by optimizing a "partially-collapsed" bound. Modeling high-dimensional time series systems is enabled through use of a dynamical GP latent variable prior. Examples imputing missing data on images and super-resolution imputation of missing video frames demonstrate the model.
Cite
@article{arxiv.1805.08665,
title = {Structured Bayesian Gaussian process latent variable model},
author = {Steven Atkinson and Nicholas Zabaras},
journal= {arXiv preprint arXiv:1805.08665},
year = {2018}
}