Hello Achim, Thank you very much, this looks exactly like what I was looking for. (p.s: Their presentation here<http://pages.stern.nyu.edu/~rsela/REEMtree/REEMpresentation.pdf> Is most helpful)
Best, Tal ----------------Contact Details:------------------------------------------------------- Contact me: tal.gal...@gmail.com | 972-52-7275845 Read me: www.talgalili.com (Hebrew) | www.biostatistics.co.il (Hebrew) | www.r-statistics.com (English) ---------------------------------------------------------------------------------------------- On Mon, Jul 12, 2010 at 2:03 AM, Achim Zeileis <achim.zeil...@uibk.ac.at>wrote: > On Sun, 11 Jul 2010, Tal Galili wrote: > > Hello all, >> >> This is more a statistical question then an R question, but I am sure it >> will have an R interpretation to it. >> >> If I wish to predict an outcome based on some potential features, I could >> (in some cases) use either regression or regression-tree. >> However, if my observations are divided to groups (for example by >> "subject"), I might then want to model that using a random effect for the >> "subject" and a fixed effect for the other features I wish to model for >> the >> prediction. >> My question is what (if exist) is the parallel of this in regression trees >> ? >> Is it simply like adding the "subject" classifier to the tree? or is this >> leading to a different model scheme all together? (and if so - what is it) >> > > We had thought about doing something in this direction in the model-based > recursive partitioning framework (MOB) in the "party" package but never > pulled it off. > > However, I've seen various other ideas at conferences for trees with random > intercepts etc. > > One CRAN package that provides infracstructure for this is "REEMtree" which > is probably worth a look. > > hth, > Z > > >> Thanks, >> Tal >> >> >> >> >> ----------------Contact >> Details:------------------------------------------------------- >> Contact me: tal.gal...@gmail.com | 972-52-7275845 >> Read me: www.talgalili.com (Hebrew) | www.biostatistics.co.il (Hebrew) | >> www.r-statistics.com (English) >> >> ---------------------------------------------------------------------------------------------- >> >> [[alternative HTML version deleted]] >> >> ______________________________________________ >> R-help@r-project.org 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. >> >> [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org 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.
