Hi Uwe, you said 'You need at least 76252 obs and that means the design matrix needs > 46 Gbyte! '
Can you please explain me how you come up with these 2 numbers? Is the number '76252 = 76251 + 1 (1 for the intercept in the model)' somehow related with the Saturated model? Thanks, On Sun, Apr 1, 2012 at 10:46 PM, Uwe Ligges <lig...@statistik.tu-dortmund.de> wrote: > > > On 01.04.2012 08:46, Xiaobo Gu wrote: >> >> 2012/3/31 Uwe Ligges<lig...@statistik.tu-dortmund.de> >> >>> >>> >>> On 30.03.2012 03:16, Xiaobo Gu wrote: >>> >>>> Hi, >>>> >>>> I got a stack overflow error when training a glm model with a very long >>>> formula. >>>> >>> >>> I just tried with a formula of length 1000. How long was yours? >>> Which version of R? Where is the repdroducible example? >>> >>> >> We have a glm formula with 76251 terms, the text of the formula is about >> 150K, we are using R 2.14.2 >> >> Xiaobo Gu >> > > > You would need do compile your own copy of R and increase the stack size, on > the slow machines around here, it takes even hours just to parse the > formula. > > Aynway, I canmnot believe you have a sufficient number of observations in > the end: > > You need at least 76252 obs and that means the design matrix needs > 46 > Gbyte! Hence a sensible calculation is not really possible unless you have > really big machines around. > > Best, > Uwe Ligges > > > ______________________________________________ > 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. ______________________________________________ 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.
