Re: [R] gamlss and glm binomial family

From: Prof Brian Ripley <ripley_at_stats.ox.ac.uk>
Date: Tue, 25 Mar 2008 20:47:10 +0000 (GMT)

On Tue, 25 Mar 2008, pgiraudo_at_univ-fcomte.fr wrote:

> Dear all and Mikis
>
> I have the opportunity to compare fits with the 'classical' glm and
> gamlss and no smoother of any kind just the same model formula (both
> with the binomial family). I get exactly the same coefficients but
> very different residuals, gamlss giving residuals which are extremely
> close to 'normal' and glm very far...

What type of residuals are these? See ?residuals.glm and its first reference, and ?residuals.gamlss. The defaults for glm and gamlss are not comparable.

> How can this be ?

Comparing 'apples and oranges', perhaps?

>
> Thanks in advance for any indication or threat...
>
> Patrick
>
> ______________________________________________
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PLEASE do as we ask.

-- 
Brian D. Ripley,                  ripley_at_stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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Received on Tue 25 Mar 2008 - 21:12:55 GMT

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