Achim:
Thanks a lot for your suggestions. Tudor > Date: Sun, 13 Jun 2010 00:26:08 +0200 > From: achim.zeil...@uibk.ac.at > To: tudor_bo...@hotmail.com > CC: r-help@r-project.org > Subject: Re: [R] mob (party package) question > > On Fri, 11 Jun 2010, tudor wrote: > > > > > Dear useRs: > > > > I try to use mob from the party package (thanks Achim and Co.!) to model > > based recursive partition a data set. The model is a logistic regression > > specified with model=glinearModel and family=binomial(). Running mob > > results in a few warnings of the type: In glm.fit ... algorithm did not > > converge. As I speculate that this may be due to an insufficient number of > > iterations I am wondering if any of you knows how to pass arguments to > > glm.fit from within mob (e.g., epsilon and maxit). All my attempts to do it > > by myself failed. All suggestions are welcome. > > Hmm, good point, currently the "control" argument to glm.fit() can not be > passed through mob() because this has an argument fo the same nam. I'll > add this to our list of improvements that need to be done. > > You can try to work around this by writing your own StatModel driver, > e.g., glinearModel2. However, before doing that, I would try to see > whether this is really the problem. I guess it's more likely that there > are other problems with that particular subset, e.g., (quasi-)complete > separation or no variation in one of the variables. Simply set "verbose = > TRUE" when calling mob() and track which subset causes the error. Then you > can recreate that subset by simply calling subset() and checking whether > glm() or glm.fit() work appropriately on that sub-sample. > > hth, > Z > > > My system: Windows XP, R2.10.1. > > > > Thank you. > > > > Tudor > > -- > > View this message in context: > > http://r.789695.n4.nabble.com/mob-party-package-question-tp2252500p2252500.html > > Sent from the R help mailing list archive at Nabble.com. > > > > ______________________________________________ > > 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. > > _________________________________________________________________ Hotmail: Trusted email with Microsofts powerful SPAM protection. [[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.
