将M5与插入符号包的训练函数一起使用时，如何提取线性模型回归系数？

Question

I have built a M5 regression model tree using the train function of the caret package. I am trying to extract the linear model coefficients for each model of the tree.

The final model is called m5tune . I tried to look into m5tune$finalModel but I did not find it. The coeff() function does not seem to work either...

Answer 1

Using this approach, you can get the correlation coefficient. Please the data is only representative.

library(Rweka)
iris1<-as.data.frame(iris)
set.seed(456)
mytrain<-createDataPartition(iris$Sepal.Length,p=0.8,list=F)
trainme<-iris[mytrain,]
mymodel<-train(Sepal.Length~.,trainme,trControl=trainControl(method="cv",number=5),method="M5",
               metric="MAE")

Simply calling this gives you the correlation coefficient.

summary(mymodel)