Re: [R] validation of logistic regression model with weighted presences and absences

From: Frank E Harrell Jr <f.harrell_at_vanderbilt.edu>
Date: Fri, 18 Apr 2008 07:34:12 -0500

Eva Mosner wrote:
> Hello everyone!
>
> I want to validate logistic regression models of species distrubution
> data where presences and absences are weighted differently.
> I used lrm from Design package but unfortunately, validate.lrm ignores
> weights in the validation process.
> Has anyone an idea (package, code) how I can do the validation including
> weights?
>
> Thanks a lot!
>
> Eva
>
> EvaMosner_at_web.de

Code contributions to the predab.resample function in Design are welcomed.

Frank

-- 
Frank E Harrell Jr   Professor and Chair           School of Medicine
                      Department of Biostatistics   Vanderbilt University

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Received on Fri 18 Apr 2008 - 13:31:19 GMT

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