Uncorrelated multilinear principal component analysis through successive variance maximization

Authors:
Haiping Lu;Konstantinos N. Plataniotis;Anastasios N. Venetsanopoulos
Affiliations:
University of Toronto, ON, Canada;University of Toronto, ON, Canada;Ryerson University, Toronto, ON, Canada
Venue:
Proceedings of the 25th international conference on Machine learning
Year:
2008

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Abstract

Tensorial data are frequently encountered in various machine learning tasks today and dimensionality reduction is one of their most important applications. This paper extends the classical principal component analysis (PCA) to its multilinear version by proposing a novel unsupervised dimensionality reduction algorithm for tensorial data, named as uncorrelated multilinear PCA (UMPCA). UMPCA seeks a tensor-to-vector projection that captures most of the variation in the original tensorial input while producing uncorrelated features through successive variance maximization. We evaluate the UMPCA on a second-order tensorial problem, face recognition, and the experimental results show its superiority, especially in low-dimensional spaces, through the comparison with three other PCA-based algorithms.