Robust LS-SVM regression using fuzzy c-means clustering

  • Authors:
  • Jooyong Shim;Changha Hwang;Sungkyun Nau

  • Affiliations:
  • Department of Applied Statistics, Catholic University of Daegu, Kyungbuk, South Korea;Division of Information and Computer Science, Dankook University, Seoul,Yongsan, South Korea;Division of Information and Computer Science, Dankook University, Seoul,Yongsan, South Korea

  • Venue:
  • ICNC'06 Proceedings of the Second international conference on Advances in Natural Computation - Volume Part I
  • Year:
  • 2006

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Abstract

The least squares support vector machine(LS-SVM) is a widely applicable and useful machine learning technique for classification and regression. The solution of LS-SVM is easily obtained from the linear Karush-Kuhn-Tucker conditions instead of a quadratic programming problem of SVM. However, LS-SVM is less robust due to the assumption of the errors and the use of a squared loss function. In this paper we propose a robust LS-SVM regression method which imposes the robustness on the estimation of LS-SVM regression by assigning weight to each data point, which represents the membership degree to cluster. In the numerical studies, the robust LS-SVM regression is compared with the ordinary LS-SVM regression.