Fuzzy Kernel Ridge Regression for Classification

  • Authors:
  • Youngsik Choi;Jisung Noh

  • Affiliations:
  • Department of Computer Engineering, Hankuk Aviation University, 200-1 Hwajun-Dong Dukyang-Gu, Goyang-City, Gyeonggi-Do, Korea;Department of Computer Engineering, Hankuk Aviation University, 200-1 Hwajun-Dong Dukyang-Gu, Goyang-City, Gyeonggi-Do, Korea

  • Venue:
  • ICANNGA '07 Proceedings of the 8th international conference on Adaptive and Natural Computing Algorithms, Part I
  • Year:
  • 2007

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Abstract

We present a robust version of kernel ridge regression for classification, which can gracefully handle outliers. We first show that the ridge regression can be reduced to the proximal support vector machine (PSVM) which has been successfully applied in classification problems. In order to incorporate robust-ness into kernel ridge regression, we reformulate and derive a fuzzy version of kernel ridge regression so that each sample can contribute to formation of a decision boundary according to its corresponding fuzzy class membership. We also present how to determine the fuzzy class membership values. Experiments over synthetic and real data sets demonstrate superiority of the proposed method, comparing with traditional methods such as support vector machines (SVMs).