search for: virlib

Greetings, Does anyone know if the C4.5 algorithm is already implemented in R? If yes, please let me know the package. Thanks. -- View this message in context: http://www.nabble.com/C4.5-implementation-in-R-tp23736785p23736785.html Sent from the R help mailing list archive at Nabble.com.

Suppose one estimates a classification or regression tree (CART) for one group or one time period; and then estimates a CART for another group or time period. Is there a way to test for a structural change or break across the two groups or between the two time periods, in other words, is there an analogue of a Chow Test for CART? Has anyone ever seen anything like this or have any ideas how one

...Java instead of C, and also the > revision number, and is uses an open source licence, i think). > > You might want to look at this paper by Schauerhuber, Zeileis & Hornik > called 'Benchmarking Open-Source Tree Learners in R/RWeka': > > http://epub.wu-wien.ac.at/dyn/virlib/wp/eng/mediate/epub-wu-01_bd8.pdf?ID=epub-wu-01_bd8 > > otherwise, try: http://cran.r-project.org/web/views/MachineLearning.html > > Hope that helps a little bit, i've been meaning to have a play around > with that package myself actually, just need to find the time :D > &g...