[R] Regression trees using Goodness-of-Split

Fiona Callaghan fmc2+ at pitt.edu
Tue Jul 24 22:12:42 CEST 2007

I have two questions:
I would like to know if there is a package in R that constructs a
regression tree using the 'goodness-of-split' algorithm for survival
analysis proposed by Le Blanc and Crowley (1993) (rather than the usual
CART algorithm that uses within-node difference and impurity functions). 
In other words, is there a tree package based on between-node difference
using a two sample test e.g log rank test.

2)If such a package exists, are there user-defined split functions (can we
substitute other split functions).

Thanks for any help

Fiona Callaghan, MS
A432 Crabtree Hall
Department of Biostatistics
Graduate School of Public Health
University of Pittsburgh
Phone 412 624 3063

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