glmer does not converge, how inaccurate is using nAGQ = 0?
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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