[S] splitting in CART on other than residual sum of squares

Suzanne Cashman (cashman@stat.orst.edu)
Fri, 1 May 1998 17:30:29 -0700 (PDT)


I am looking into creating a function which operates like the
tree function, but allows the user choose the statistic to be used to make
the splitting decisions (rather than only having the option of minimizing
the residual sum of squares). Currently, this logic is in a C primitive &
not easily accessed or changed. Does anyone have any knowlege of this?
Has it been done? Is there a way to avoid rewriting the entire "grow"
functionality? (S-plus Version 4 / Windows 95)

Thanks for your help!

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