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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2002, Vol. 3 Issue (2): 131-134    DOI: 10.1631/jzus.2002.0131
Computer Technology     
Probability output of multi-class support vector machines
XIN Dong, WU Zhao-hui, PAN Yun-he
Department of Computer Science & Engineering, Zhejiang University, Hangzhou 310027, China
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Abstract  A novel approach to interpret the outputs of multi-class support vector machines is proposed in this paper. Using the geometrical interpretation of the classifying heperplane and the distance of the pattern from the hyperplane, one can calculate the posterior probability in binary classification case. This paper focuses on the probability output in multi-class phase where both the one-against-one and one-against-rest strategies are considered. Experiment on the speaker verification showed that this method has high performance.

Key words： Support vector machines (SVM)      Posterior probability      Multi-class      Speaker verification     
Received: 08 July 2001     
CLC:  TP183  
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XIN Dong
WU Zhao-hui
PAN Yun-he
Cite this article:

XIN Dong, WU Zhao-hui, PAN Yun-he. Probability output of multi-class support vector machines. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2002, 3(2): 131-134.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2002.0131     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2002/V3/I2/131

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