What is the problem is the code.. d=readARFF("CM1.arff")
index <- createDataPartition(d$Defective, p = .70,list = FALSE) tr <- d[index, ] ts <- d[-index, ] index_2 <- createFolds(tr$Defective, returnTrain = TRUE, list = TRUE) ctrl <- trainControl(method = "boot", number=100, index = index_2, search="random", classProbs = TRUE, summaryFunction=twoClassSummary,savePredictions = T) net <- train(Defective ~ ., data = tr, method = "nnet", metric = "ROC", preProc = c("center", "scale", "nzv" ), trControl = ctrl, na.action=na.exclude) getTrainPerf(net) I am getting the error as below: Something is wrong; all the ROC metric values are missing: ROC Sens Spec Min. : NA Min. : NA Min. : NA 1st Qu.: NA 1st Qu.: NA 1st Qu.: NA Median : NA Median : NA Median : NA Mean :NaN Mean :NaN Mean :NaN 3rd Qu.: NA 3rd Qu.: NA 3rd Qu.: NA Max. : NA Max. : NA Max. : NA NA's :3 NA's :3 NA's :3 [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.