Displaying 1 result from an estimated 1 matches for "mseimportance".
2013 May 17
2
Selecting A List of Columns
...election of the most
important variables from a random forest then I find myself stuck. The
example below demonstrates the problem.
library(randomForest)
data(mtcars)
mtcars.rf <- randomForest(mpg ~ ., data=mtcars,importance=TRUE)
Importance<-data.frame(mtcars.rf$importance)
Importance
MSEImportance<-head(Importance[order(Importance$X.IncMSE,
decreasing=TRUE),],3)
MSEVars<-row.names(MSEImportance)
MSEVars<-data.frame(MSEVars,stringsAsFactors = FALSE)
colnames(MSEVars)<-"Vars"
NodeImportance<-head(Importance[order(Importance$IncNodePurity,decreasing=TRUE),],
3)
NodeVar...