[R] lack of memory for logistic regression in R?

Michael comtech.usa at gmail.com
Mon Jun 15 05:26:02 CEST 2009


I have to use logistic regression...

On Sun, Jun 14, 2009 at 8:04 PM, Frank E Harrell
Jr<f.harrell at vanderbilt.edu> wrote:
> Also it would be useful to compare glm with the lrm function in the Design
> package, for speed and memory use.
>
> Frank
>
>
> David Winsemius wrote:
>>
>> On Jun 14, 2009, at 9:06 PM, Michael wrote:
>>
>>> Hi all,
>>>
>>> I am getting the following error message:
>>>
>>>> mymodel = glm(response ~ . , family=binomial, data=C);
>>>
>>> Error: cannot allocate vector of size 734.2 Mb
>>> In addition: Warning messages:
>>> 1: In array(0, c(n, n), list(levs, levs)) :
>>>  Reached total allocation of 1535Mb: see help(memory.size)
>>> 2: In array(0, c(n, n), list(levs, levs)) :
>>>  Reached total allocation of 1535Mb: see help(memory.size)
>>> 3: In array(0, c(n, n), list(levs, levs)) :
>>>  Reached total allocation of 1535Mb: see help(memory.size)
>>> 4: In array(0, c(n, n), list(levs, levs)) :
>>>  Reached total allocation of 1535Mb: see help(memory.size)
>>>
>>> -----------
>>>
>>> The data frame is 60000 x 20,
>>>
>>> is it too large for R?
>>>
>>> What shall I do? Will close all other softwares/applications help? My
>>> PC is Vista with 4GB memory. Thank you.
>>
>> It's certainly not too large for R. Have you looked at the R Windows FAQ
>> on the topic?
>>
>>
>> http://cran.r-project.org/bin/windows/base/rw-FAQ.html#There-seems-to-be-a-limit-on-the-memory-it-uses_0021
>>
>> ... and perhaps:
>>
>> http://finzi.psych.upenn.edu/Rhelp08/2008-August/171649.html
>>
>>
>> David Winsemius, MD
>> Heritage Laboratories
>> West Hartford, CT
>>
>> ______________________________________________
>> R-help at 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.
>>
>
>
> --
> Frank E Harrell Jr   Professor and Chair           School of Medicine
>                     Department of Biostatistics   Vanderbilt University
>




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