Open Access

A Metric Multidimensional Scaling-Based Nonlinear Manifold Learning Approach for Unsupervised Data Reduction

EURASIP Journal on Advances in Signal Processing20082008:862015

Received: 30 September 2007

Accepted: 7 March 2008

Published: 19 March 2008


Manifold learning may be seen as a procedure aiming at capturing the degrees of freedom and structure characterizing a set of high-dimensional data, such as images or patterns. The usual goals are data understanding, visualization, classification, and the computation of means. In a linear framework, this problem is typically addressed by principal component analysis (PCA). We propose here a nonlinear extension to PCA. Firstly, the reduced variables are determined in the metric multidimensional scaling framework. Secondly, regression of the original variables with respect to the reduced variables is achieved considering a piecewise linear model. Both steps parameterize the (noisy) manifold holding the original data. Finally, we address the projection of data onto the manifold. The problem is cast in a Bayesian framework. Application of the proposed approach to standard data sets such as the COIL-20 database is presented.

Publisher note

To access the full article, please see PDF.

Authors’ Affiliations

Laboratoire des Sciences de l'Image, de l'Informatique et de la Télédétection, LSIIT, UMR 7005, CNRS-Université Louis Pasteur, Illkirch Cedex, France
Laboratoire d'Imagerie et de Neurosciences Cognitives, LINC, UMR 7191, CNRS-Université Louis Pasteur, Strasbourg Cedex, France


© M. Brucher et al. 2008

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.