thank you so much for your help. if i am not wrong then createDataPartition can be used to create stratified random splits of a data set. is there other way to do that? Thank you -- View this message in context: http://r.789695.n4.nabble.com/cross-validation-using-e1071-SVM-tp3055335p3057684.html Sent from the R help mailing list archive at Nabble.com.