[R] Stepwise regression

[ONKELINX, Thierry]

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 op 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 op r-project.org [mailto:r-help-bounces op r-project.org]
Namens Berthold
Verzonden: vrijdag 9 mei 2008 11:00
Aan: r-help op 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

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