评估R中随机森林的表现

Question

您好我有以下问题：

我想评估随机林性能，我在R

中执行了以下步骤

library(randomForest)
set.seed(300)
rf <- randomForest(Survived ~ ., data = ciforest)
rf
#and then evaluate random forest performance
library(caret)
ctrl <- trainControl(method = "repeatedcv", number = 10, repeats = 10)

Error: could not find function "trainControl"