Decision tree support vector machine based on genetic algorithm for multi-class classification |
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| Authors: | Huanhuan Chen Qiang Wang Yi Shen |
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| Affiliation: | School of Astronautics, Harbin Institute of Technology, Harbin 150001, P. R. China |
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| Abstract: | To solve the multi-class fault diagnosis tasks, decision tree support vector machine (DTSVM), which combines SVM and decision tree using the concept of dichotomy, is proposed. Since the classification performance of DTSVM highly depends on its structure, to cluster the multi-classes with maximum distance between the clustering centers of the two sub-classes, genetic algorithm is introduced into the formation of decision tree, so that the most separable classes would be separated at each node of decisions tree. Numerical simulations conducted on three datasets compared with "one-against-all" and "one-against-one" demonstrate the proposed method has better performance and higher generalization ability than the two conventional methods. |
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| Keywords: | support vector machine (SVM) decision tree genetic algorithm classification |
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