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 ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
