• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

Computer Engineering & Science

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A new summation multi-kernel learning
method based on sample weighting

SHEN Jian,JIANG Yun,ZHANG Ya-nan,HU Xue-wei   

  1. (College of Computer Science and Engineering,Northwest Normal University,Lanzhou 730070,China)
  • Received:2015-09-14 Revised:2016-03-17 Online:2017-10-25 Published:2017-10-25

Abstract:

Multi-kernel learning is a new research hotspot in current kernel machine learning field. By mapping data
into the high dimensional space, kernel methods increase the computing performance of linear classifiers such
as support vector machines, and it is a convenient and effective way to deal with nonlinear pattern
recognition and classification. However, in some complex situations, such as heterogeneous data or irregular
data, large sample size and non-flat sample distribution, the kernel learning method based on single kernel
function cannot completely meet the requirement, so it is necessary to develop multiple kernel functions in
order to get better results. We propose a new summation multi-kernel learning method based on sample
weighting which can be weighted by the capability of how much a single kernel function can fit the sample.
Experiment analysis on several data sets shows that the proposed method can obtain high classification
accuracy.

Key words: multi-kernel learning, map, nonlinear model, heterogeneous data