PASCAL - Pattern Analysis, Statistical Modelling and Computational Learning

Bayesian exponential family projections for coupled data sources
Arto Klami, Seppo Virtanen and Samuel Kaski
In: 26th Conference on Uncertainty in Artificial Intelligence (UAI 2010), 8-11 July 2010, Catalina Island, California, USA.

Abstract

Exponential family extensions of principal component analysis (EPCA) have received a considerable amount of attention in recent years, demonstrating the growing need for basic modeling tools that do not assume the squared loss or Gaussian distribution. We extend the EPCA model toolbox by presenting the first exponential family multi-view learning methods of the partial least squares and canonical correlation analysis, based on a unified representation of EPCA as matrix factorization of the natural parameters of exponential family. The models are based on a new family of priors that are generally usable for all such factorizations. We also introduce new inference strategies, and demonstrate how the methods outperform earlier ones when the Gaussianity assumption does not hold.

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EPrint Type:Conference or Workshop Item (Paper)
Project Keyword:Project Keyword UNSPECIFIED
Subjects:Learning/Statistics & Optimisation
Multimodal Integration
Theory & Algorithms
ID Code:7602
Deposited By:Arto Klami
Deposited On:17 March 2011