Two-stage multiple kernel learning with multiclass kernel polarization

doi:10.1016/j.knosys.2013.04.006

CORC > 北京大学 > 信息科学技术学院

	Two-stage multiple kernel learning with multiclass kernel polarization
	Wang, Tinghua ; Zhao, Dongyan ; Feng, Yansong
刊名	knowledge based systems
	2013
关键词	Multiple kernel learning (MKL) Multiclass kernel polarization Support vector machine (SVM) Multiclass classification Model selection SUPPORT VECTOR MACHINES CLASSIFICATION ALGORITHMS ALIGNMENT MATRIX
DOI	10.1016/j.knosys.2013.04.006
英文摘要	The success of kernel methods is very much dependent on the choice of kernels. Multiple kernel learning (MKL) aims at learning a combination of different kernels in order to better match the underlying problem instead of using a single fixed kernel. In this paper, we propose a simple but effective multiclass MKL method by a two-stage strategy, in which the first stage finds the kernel weights to combine the kernels, and the second stage trains a standard multiclass support vector machine (SVM). Specifically, we first present an evaluation criterion named multiclass kernel polarization (MKP) to assess the quality of a kernel in the multiclass classification scenario, and then develop a heuristic rule to directly assign a weight to each kernel based on the quality of the individual kernel. MKP is a multiclass extension of the kernel polarization, which is a universal kernel evaluation criterion for kernel design and learning. Comprehensive experiments are conducted on several UCI benchmark examples and the results well demonstrate the effectiveness and efficiency of our approach. (c) 2013 Elsevier B.V. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000320893200002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Computer Science, Artificial Intelligence; SCI(E); EI; 10; ARTICLE; 10-16; 48
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/161777]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Wang, Tinghua,Zhao, Dongyan,Feng, Yansong. Two-stage multiple kernel learning with multiclass kernel polarization[J]. knowledge based systems,2013.
APA	Wang, Tinghua,Zhao, Dongyan,&Feng, Yansong.(2013).Two-stage multiple kernel learning with multiclass kernel polarization.knowledge based systems.
MLA	Wang, Tinghua,et al."Two-stage multiple kernel learning with multiclass kernel polarization".knowledge based systems (2013).