What do you mean by accuracy? Proportion classified correctly is not a good index of accuracy if that's the problem. Frank
rahul143 wrote > Hi, > > I ran two svm models in R e1071 package: the first without > cross-validation and the second with 10-fold cross-validation. > > I used the following syntax: > > #Model 1: Without cross-validation: >> svm.model <- svm(Response ~ ., data=data.df, type="C-classification", >> kernel="linear", cost=1) >> predict <- fitted(svm.model) >> cm <- table(predict, data.df$Response) >> cm > > #Model2: With 10-fold cross-validation: >> svm.model2 <- svm(Response ~ ., data=data.df, type="C-classification", >> kernel="linear", cost=1, cross=10) >> predict2 <- fitted(svm.model2) >> cm2 <- table(predict2, data.df$Response) >> cm2 > > However, when I compare cm and cm2, I notice that the confusion matrices > are identical although the accuracy of each model is diffent. What am I > doing wrong? > > Thanks for you help, ----- Frank Harrell Department of Biostatistics, Vanderbilt University -- View this message in context: http://r.789695.n4.nabble.com/e1071-SVM-Cross-validation-error-confusion-matrix-tp4651652p4651692.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
