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Bias-corrected support vector machine with Gaussian kernel in high-dimension, low-sample-size settings

Yugo Nakayama (), Kazuyoshi Yata () and Makoto Aoshima ()
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Yugo Nakayama: University of Tsukuba
Kazuyoshi Yata: University of Tsukuba
Makoto Aoshima: University of Tsukuba

Annals of the Institute of Statistical Mathematics, 2020, vol. 72, issue 5, No 8, 1257-1286

Abstract: Abstract In this paper, we study asymptotic properties of nonlinear support vector machines (SVM) in high-dimension, low-sample-size settings. We propose a bias-corrected SVM (BC-SVM) which is robust against imbalanced data in a general framework. In particular, we investigate asymptotic properties of the BC-SVM having the Gaussian kernel and compare them with the ones having the linear kernel. We show that the performance of the BC-SVM is influenced by the scale parameter involved in the Gaussian kernel. We discuss a choice of the scale parameter yielding a high performance and examine the validity of the choice by numerical simulations and actual data analyses.

Keywords: Geometric representation; HDLSS; Imbalanced data; Radial basis function kernel (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (2)

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DOI: 10.1007/s10463-019-00727-1

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