[R-sig-ME] glmer does not converge, how inaccurate is using nAGQ = 0?

[Ken Beath]

You could use a value of nAGQ that is higher, start with 5 and work up.

How good the approximation is, depends. If you are having convergence
problems it probably isn't.

On 2 April 2015 at 01:23, Paolo Fraccaro <paolo.f.genova at gmail.com> wrote:

> Hi
>
> I have a dataset of ~200k piece of hardware tested yearly for 10 years or
> until failure (~15k). Therefore, the overall dataset size is ~2,000k. I'm
> trying to fit a mixed effects logistic model with glmer, but the model
> does not converge with the default settings. I tried to increase the
> number of max iterations allowed (from 20 to 100) but still it does not
> converge. I then set the nAGQ = 0 and obtained the less accurate estimate
> of the model.
>
> My questions would be:
> Do you have any idea of what parameters I could modify to try to make the
> model converge?
> How inaccurate is using nAGQ = 0?
>
> Many thanks.
>
> Paolo
>
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>



-- 

*Ken Beath*
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