Dear R community
I
have a question regarding the value of cost complexity parameter "k"
used in "tree" package for pruning purpose. In the example below i used k=0.
But if i take the value k=NULL, then it will not plot the resultant tree. Any
help in finding the
optimum value of "k" is requested. Please give some suggestion in this
regard. Thanks
library(tree)
ds=iris; iris=transform(iris, Species = factor(Species, labels = letters[1:3]))
miris
<- tree(Species ~ ., data = iris, control=tree.control(nobs = 150,
minsize = 5, mincut = 2)); iris.prun=prune.tree(miris,
method=c("misclass"), best = NULL, k=0); iris.prun; summary(iris.prun);
plot(iris.prun)
best regards
Muhammad Azam
[[alternative HTML version deleted]]
______________________________________________
[email protected] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
