Gaussian process classification using posterior linearization

Research output: Contribution to journalArticleScientificpeer-review

Researchers

Research units

  • University of Liverpool
  • Antonio de Nebrija University

Abstract

This letter proposes a new algorithm for Gaussian process classification based on posterior linearization (PL). In PL, a Gaussian approximation to the posterior density is obtained iteratively using the best possible linearization of the conditional mean of the labels and accounting for the linearization error. PL has some theoretical advantages over expectation propagation (EP): all calculated covariance matrices are positive definite and there is a local convergence theorem. In experimental data, PL has better performance than EP with the noisy threshold likelihood and the parallel implementation of the algorithms.

Details

Original languageEnglish
Article number8673324
Pages (from-to)735-739
Number of pages5
JournalIEEE Signal Processing Letters
Volume26
Issue number5
Publication statusPublished - 1 May 2019
MoE publication typeA1 Journal article-refereed

    Research areas

  • Bayesian inference, energy efficiency, Gaussian process classification, posterior linearization, simultaneous wireless information and power transfer, two-way relaying

ID: 33560484