I have used packages rpart, mvpart and tree for classification and
regression trees. I want to calculate fraction of null deviance explained
by each node and variable in the tree. For instance, at the first split,
this would be (1 - (sum of residual deviance in each of the two
leaves)/deviance at the root). In the subsequent splits, this formula is
slightly different.
There probably is a function to get this done within R. Any help is
appreciated.
Thank you,
Kumar Mainali
--
Postdoctoral Associate
Department of Biology
University of Maryland, College Park
ᐧ
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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.
