thank you so much for your suggestion, i will use caret package is ipred:errorest method is good enough for validating (or cross check) my svm result? -- View this message in context: http://r.789695.n4.nabble.com/to-determine-the-variable-importance-in-svm-tp3013817p3015172.html Sent from the R help mailing list archive at Nabble.com.