Gaussian Process Regression Networks

Details Gaussian Process Regression Networks Gaussian Process Regression Networks

2011-10-19

arxiv.org/abs/1110.4411v1

Statistics

Machine Learning

17 pages, 3 figures, 1 table. Submitted for publication

Scientific paper

We introduce a new regression framework, Gaussian process regression networks (GPRN), which combines the structural properties of Bayesian neural networks with the non-parametric flexibility of Gaussian processes. This model accommodates input dependent signal and noise correlations between multiple response variables, input dependent length-scales and amplitudes, and heavy-tailed predictive distributions. We derive both efficient Markov chain Monte Carlo and variational Bayes inference procedures for this model. We apply GPRN as a multiple output regression and multivariate volatility model, demonstrating substantially improved performance over eight popular multiple output (multi-task) Gaussian process models and three multivariate volatility models on benchmark datasets, including a 1000 dimensional gene expression dataset.

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