Improved parameter tuning algorithms for fuzzy classifiers

Authors:
Kazuya Morikawa;Shigeo Abe
Affiliations:
Graduate School of Engineering, Kobe University, Nada, Japan;Graduate School of Engineering, Kobe University, Nada, Japan
Venue:
ICONIP'08 Proceedings of the 15th international conference on Advances in neuro-information processing - Volume Part I
Year:
2008

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Abstract

We propose two methods for tuning membership functions of a fuzzy classifier by the support-vector-machine (SVM) like training. For each class, we define a membership function in the feature space. In the first method, we tune the slopes of the membership functions so that the margin between classes is maximized. This method is similar to a linear all-at-once SVM. We call this AAO tuning. In the second method, for each class the membership function is tuned so that the margin between the class and the remaining classes are maximized. This method is similar to a linear one-against-all SVM. This is called OAA tuning. According to the computer experiment, the kernel-discriminant-analysis (KDA) based fuzzy classifiers tuned by AAO tuning and by OAA tuning and SVM show comparable classification performance.