Volume 8 Number 1 (Jan. 2013)
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JCP 2013 Vol.8(1): 113-120 ISSN: 1796-203X
doi: 10.4304/jcp.8.1.113-120

A Parameters Optimization Method of v-Support Vector Machine and Its Application in Speech Recognition

Jing Bai, Jie Wang and Xueying Zhang
College of Information Engineering, Taiyuan University of Technology, Taiyuan, China

Abstract—An important factor that influences the performance of support vector machine is how to select its parameters. In traditional C-support vector machine, it is difficult to select penalty parameter C and kernel parameters, inappropriate choice of those values may cause deterioration of its performance and increase algorithm complexity. In order to solve those problems, in this paper, selected v - support vector machine as the research object, proposed an optimal parameters search method for the Gaussian kernel v - support vector machine based on improved particle swarm optimization, constructed a nonspecific person and isolated words speech recognition system based on v - support vector machine using the optimized parameters firstly. Experiments show that this new v - support vector machine method achieves better speech recognition correct rates than traditional C-support vector machine in different signal to noise ratios and different words, this new improved method of optimizing v - SVM parameters is very efficient and has shorter convergence time, and makes v - support vector machine have better Performance in speech recognition system.

Index Terms—v-support vector machine, particle swarm optimization, Gaussian kernel parameter, speech recognition

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Cite: Jing Bai, Jie Wang and Xueying Zhang, " A Parameters Optimization Method of v-Support Vector Machine and Its Application in Speech Recognition," Journal of Computers vol. 8, no. 1, pp. 113-120, 2013.

General Information

ISSN: 1796-203X
Abbreviated Title: J.Comput.
Frequency: Bimonthly
Editor-in-Chief: Prof. Liansheng Tan
Executive Editor: Ms. Nina Lee
Abstracting/ Indexing: DBLP, EBSCO,  ProQuest, INSPEC, ULRICH's Periodicals Directory, WorldCat, CNKI,etc
E-mail: jcp@iap.org
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