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IEICE TRANSACTIONS on Information

Learning Subspace Classification Using Subset Approximated Kernel Principal Component Analysis

Yoshikazu WASHIZAWA

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Summary :

We propose a kernel-based quadratic classification method based on kernel principal component analysis (KPCA). Subspace methods have been widely used for multiclass classification problems, and they have been extended by the kernel trick. However, there are large computational complexities for the subspace methods that use the kernel trick because the problems are defined in the space spanned by all of the training samples. To reduce the computational complexity of the subspace methods for multiclass classification problems, we extend Oja's averaged learning subspace method and apply a subset approximation of KPCA. We also propose an efficient method for selecting the basis vectors for this. Due to these extensions, for many problems, our classification method exhibits a higher classification accuracy with fewer basis vectors than does the support vector machine (SVM) or conventional subspace methods.

Publication
IEICE TRANSACTIONS on Information Vol.E99-D No.5 pp.1353-1363
Publication Date
2016/05/01
Publicized
2016/01/25
Online ISSN
1745-1361
DOI
10.1587/transinf.2015EDP7334
Type of Manuscript
PAPER
Category
Pattern Recognition

Authors

Yoshikazu WASHIZAWA
  The Univeristy of Electro-Communications,RIKEN

Keyword