test_index
<- createDataPartition
(y, times
= 1, p
= 0.5,
list = FALSE
)train_set
<- data %>% slice
(-test_index
)test_set
<- data %>% slice
(test_index
)
control <- trainControl(method = "cv", number = 10, p = .9, classProbs = TRUE)
train_knn
<-train
(y ~ .,
data = data.frame(train_set
), method
= "knn", tuneGrid
= data.frame(k
= c(1,
3,
5,
7)), trControl
= control,
preProcess
= c("center",
"scale"))
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