eng Science and Education Publishing Journal of Mathematical Sciences and Applications 2014-04-11 2 2 17 20 10.12691/jmsa-2-2-1 JMSA2014221 article Iut Tri Utami triutami_iut@yahoo.com 1 Bagus Sartono 2 Kusman Sadik 2 Department of Mathematics, Tadulako University, Palu, Indonesia Department of Statistics, Bogor Agricultural University, Bogor, Indonesia An ensemble consists of a set of individually trained classifiers (such as Support Vector Machine and Classification Tree) whose predictions are combined by an algorithm. Ensemble methods is expected to improve the predictive performance of classifier. This research aims to assess and compare performance of single and ensemble classifiers of Support Vector Machine (SVM) and Classification Tree (CT) by using simulation data. The simulation data is based on three data structures which are linearly separable, linearly nonseparable and nonlinearly separable data. The simulation data results show that SVM has the ability to classify the data better than CT. Ensemble method improve classification performance and more stable than single classifier. This was due to ensemble SVM has the smallest percentage of the average misclassification rate and standard deviation. http://pubs.sciepub.com/jmsa/2/2/1/jmsa-2-2-1.pdf classification tree support vector machine ensemble method