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Support Vector Machine Ensemble Based on Genetic Algorithm

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Support vector machines (SVMs) have been introduced as effective methods for solving classification problems.However, due to some limitations in practical applications,their generalization performance is sometimes far from the expected level. Therefore, it is meaningful to study SVM ensemble learning. In this paper, a novel genetic algorithm based ensemble learning method, namely Direct Genetic Ensemble (DGE), is proposed. DGE adopts the predictive accuracy of ensemble as the fitness function and searches a good ensemble from the ensemble space. In essence, DGE is also a selective ensemble learning method because the base classifiers of the ensemble are selected according to the solution of genetic algorithm. In comparison with other ensemble learning methods, DGE works on a higher level and is more direct. Different strategies of constructing diverse base classifiers can be utilized in DGE.Experimental results show that SVM ensembles constructed by DGE can achieve better performance than single SVMs,bagged and boosted SVM ensembles. In addition, some valuable conclusions are obtained.

ensemble learninggenetic algorithmsupport vector machinediversity

LI Ye、YIN Ru-po、CAI Yun-ze、XU Xiao-ming

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Department of Automation, Shanghai J iaotong University, Shanghai 200030

国家重点基础研究发展计划(973计划)国家自然科学基金

2002cb312200-01-360174038

2006

东华大学学报(英文版)
东华大学

东华大学学报(英文版)

影响因子:0.091
ISSN:1672-5220
年,卷(期):2006.23(2)
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