[R] Surrogate splits for decision trees
csprin at ca.sandia.gov
Wed May 23 01:28:27 CEST 2001
Short verse of the question:
Is there R code which will calculate surrogate splits
and/or delta impurity for decision trees at each node?
I have local, legacy code which I use to calculate my decision trees.
I would like to switch to R, but as I understand it surrogate splits
are not implemented.
Surrogate splits and feature ranking are described in Breiman et al
"CART" 1984. Curiously, they don't seem to appear anywhere else
in the literature.
Can anyone comment on how extenible Ripley's tree package is?
Thanks in advance,
Clayton Springer, Ph. D.
Sandia National Laboratories csprin at ca.sandia.gov
Biosystems Research Department (925) 294-2143
P.O. Box 969, MS 9951 fax: (925) 294-3020
Livermore, CA, 94551-0969
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