Class specific sparse representation for classification

doi:10.1016/j.sigpro.2015.04.018

Class specific sparse representation for classification

2015-11-01

33

PRE

AI

DOI：10.1016/j.sigpro.2015.04.018

Original

Original request for help

Save

Abstract

En 中文

Motivated by the fact that the signals tend to have a representation biased towards their own classes, we propose a novel Sparse Representation-based Classifier (SRC) named Class Specific Sparse Representation-based Classifier (CSSRC), which incorporates the class information in the representation learning. Unlike the conventional SRC algorithms, CSSRC defines each class as a group and then impels these groups to compete for representing the test sample. To achieve such property, CSSRC imposes a L-1-norm constraint to the classes for compulsively selecting the most relevant classes and introduces a L-2-norm constraint to the samples belonging to the same class for making sure that all homogeneous samples can be sufficiently exploited for representation. Since CSSRC is a typical structure sparse representation issue, it can be efficiently solved by the convex optimization. Seven popular visual and audio signal databases are employed for evaluation. The results demonstrate its effectiveness in comparison with the state-of-the-art classifiers. (C) 2015 Elsevier B.V. All rights reserved.

Keywords:

Signal classification

Image classification

Sparse learning

Group sparsity

Face recognition

Collaborative representation

Class specific sparse representation for classification

Abstract

AI Summary

Journal

Organization