[R] Additional Documentation for rpart?
csprin at brandybuck.ca.sandia.gov
Tue Nov 13 00:57:10 CET 2001
I am looking for additional documentation on the "adj" column in rpart's
splits matrix. The help says:
gives the adjusted concordance for surrogate splits
I am looking info about "adjusted concordance". I cannot find this phrase
in either Therneau & Atkinson original RPART documentation or the CART
This question came up in the context of trying to calculate what the
"improve" for the node would have been if surrogate split were used
instead. So if anybody knows how to do (or extract) that would be very
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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