machine learning - Retrieve candidate attributes for a node in Decision Tree using R -
i using r creating decision tree using cart. did using
feature_vectors <- read.table("c:/users/dvs/desktop/tagme!-data/train/feature_vectors.txt", quote="\"") set.seed(1234) ind <- sample(2, nrow(winequality.red), replace=true, prob=c(0.7, 0.3)) traindata <- winequality.red[ind==1,] testdata <- winequality.red[ind==2,] myformula <- quality ~ fixed.acidity + volatile.acidity + citric.acid + residual.sugar + chlorides + free.sulfur.dioxide + total.sulfur.dioxide + density + ph + sulphates + alcohol table(predict(wine_ctree), traindata$quality) print(wine_ctree) plot(wine_ctree)
now, need print list of candidate attributes possible root node. ie node minimal deviation in (im)purity values selected root node. there way use built in functions or have modify source?
Comments
Post a Comment