标签： cluster-analysis rpart
这是代码
rpart.cv.1 <- train(Recommend~ ., data = train.tokens.df, method = "rpart", trControl = cv.cntrl, tuneLength = 3)
这是我在运行代码时不断遇到的错误
Error in terms.formula(formula, data = data) : duplicated name 'X5.3' in data frame using '.'