Tackling of convergence issues in gamlss vs glm2

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Tackling of convergence issues in gamlss vs glm2

Nik Tuzov

Hello:

I'd like to know how and if the GLM convergence problems are addressed in gamlss.
For simplicity, let's focus on Normal and Negative Binomial with log link.
The convergence issues of the glm() function were alleviated in 2011 when glm2 package was released.
Package gamlss was released in 2012, so it might still use the glm-like solution or call glm() directly.
Is that the case or the improvements from glm2 have been incorporated into gamlss also?

Regards,
Nik

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Re: Tackling of convergence issues in gamlss vs glm2

Bert Gunter-2
If you do not receive a satisfactory reply to this rather technical
question -- this list is *mainly* about R programming -- you might try
directly emailing the maintainer: ?maintainer. This assumes of course that
you have thoroughly read package documentation + checked any of its listed
references (which I have obviously not).

You might also check the package code, though this often leads to C code
resources, which is kinda tough.

Cheers,
Bert



Bert Gunter

"The trouble with having an open mind is that people keep coming along and
sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )

On Thu, May 10, 2018 at 9:40 AM, Nik Tuzov <[hidden email]> wrote:

>
> Hello:
>
> I'd like to know how and if the GLM convergence problems are addressed in
> gamlss.
> For simplicity, let's focus on Normal and Negative Binomial with log link.
> The convergence issues of the glm() function were alleviated in 2011 when
> glm2 package was released.
> Package gamlss was released in 2012, so it might still use the glm-like
> solution or call glm() directly.
> Is that the case or the improvements from glm2 have been incorporated into
> gamlss also?
>
> Regards,
> Nik
>
> ______________________________________________
> [hidden email] mailing list -- To UNSUBSCRIBE and more, see
> 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.
>

        [[alternative HTML version deleted]]

______________________________________________
[hidden email] mailing list -- To UNSUBSCRIBE and more, see
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.