search for: wine_train

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2009 Mar 04
0
Error in -class : invalid argument to unary operator
...ror that I have been trying to fix for a week or so now.I am trying to build a classifer that will classify the wine dataset using Naive Bayes. My code is as follows library (e1071) wine<- read.csv("C:\\Rproject\\Wine\\wine.csv") split<-sample(nrow(wine), floor(nrow(wine) * 0.5)) wine_training <- wine[split, ] wine_testing <- iris[-split, ] naive_bayes <-naiveBayes(class~.,data=wine_training) x_testing <- subset(wine_testing, select = -class) y_testing <- wine_testing$class # just grab Species variable of iris_training pred <- predict(naive_bayes, x_testing)...