feature.selected {uni.survival.tree}

The names of features that are selected in a tree

Description

The function returns the names of features (covariates) that are selected as the internal nodes of a tree. Only the names of the covariates are shown by excluding the cutt-off values.

Usage

feature.selected(tree)

Arguments

tree

:an object made from the "uni.tree" function

Details

The outputs show important features for predicting survival outcomes.

Value

An array of characters that are the names from those covariates selected in the tree

Examples

data(Lung,package="compound.Cox")
train_Lung=Lung[which(Lung[,"train"]==TRUE),] #select training data
t.vec=train_Lung[,1]
d.vec=train_Lung[,2]
x.mat=train_Lung[,-c(1,2,3)]
res=uni.tree(t.vec,d.vec,x.mat,P.value=0.01,d0=0.01,S.plot=FALSE,score=TRUE)
feature.selected(res)