Re: [R] Bootstrap tree selection in rpart

] [mailto:[EMAIL PROTECTED] Behalf Of Fiona Callaghan Sent: 13 September 2007 15:31 To: Terry Therneau Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: [R] Bootstrap tree selection in rpart Thanks very much for replying -- just one final question: does this hold when the outcome is continuous

Re: [R] Bootstrap tree selection in rpart

Thanks very much for replying -- just one final question: does this hold when the outcome is continuous (and not discrete) e.g instead of the outcome being multinomial we have a continuous outcome like residuals? Thanks again Fiona > Fiona Callaghan asked about using the bootstrap instead of > c

Re: [R] Bootstrap tree selection in rpart

Fiona Callaghan asked about using the bootstrap instead of cross-validation in the tree pruning step. It turns out that cross-validation works better than the bootstrap for trees. The issue is a subtle one. The bootstrap can be thought of as 2 steps. 1. Deduction: Evaluate the behavior