[R] Regression trees using Goodness-of-Split

[Fiona Callaghan]

Hi
I have two questions:
1)
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


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