Re: [R] Stepwise regression

From: ONKELINX, Thierry <Thierry.ONKELINX_at_inbo.be>
Date: Fri, 09 May 2008 11:25:31 +0200

Berthold,

stepAIC does model selected based on AIC (or a similar criterion like BIC). So it does not uses the alpha levels. Hence it's pointless to specify them in stepAIC.

HTH, Thierry




ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature and Forest
Cel biometrie, methodologie en kwaliteitszorg / Section biometrics, methodology and quality assurance
Gaverstraat 4
9500 Geraardsbergen
Belgium
tel. + 32 54/436 185
Thierry.Onkelinx_at_inbo.be
www.inbo.be

To call in the statistician after the experiment is done may be no more than asking him to perform a post-mortem examination: he may be able to say what the experiment died of.
~ Sir Ronald Aylmer Fisher

The plural of anecdote is not data.
~ Roger Brinner

The combination of some data and an aching desire for an answer does not ensure that a reasonable answer can be extracted from a given body of data.
~ John Tukey

-----Oorspronkelijk bericht-----
Van: r-help-bounces_at_r-project.org [mailto:r-help-bounces_at_r-project.org] Namens Berthold
Verzonden: vrijdag 9 mei 2008 11:00
Aan: r-help_at_r-project.org
Onderwerp: [R] Stepwise regression

I am using stepAIC for stepwise regression modeling.

Is there a way to change the entry and exit alpha levels for the stepwise regression using stepAIC ?

Many thanks,
Berthold

Berthold Stegemann
Bakken Research Center
Maastricht
The Netherlands

        [[alternative HTML version deleted]]



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.

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. Received on Fri 09 May 2008 - 09:27:02 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Fri 09 May 2008 - 09:30:36 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.

list of date sections of archive