feature.selected: The names of features that are selected in a tree

In uni.survival.tree: A Survival Tree Based on Stabilized Score Tests for High-dimensional Covariates

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)

uni.survival.tree documentation built on March 22, 2021, 9:05 a.m.