[R-sig-ME] Advice for the R-package of lme4

[ia08007]

Dear Dr. Bolker

I appreciate your kind help.
I can identify the version of packages at that time.
lme4 was 1.1-23 and lmerTest was 3.1-2.

For reference, are there any other packages that might affect the results?
I have tried, but it seems that other packages would affect them.

Very sorry to bother you while you are busy, but I appreciate your
cooperation.

2021年8月27日(金) 6:58 Ben Bolker <bbolker using gmail.com>:

>    [Please keep r-sig-mixed-models using r-project.org in the Cc: list!]
>
>    The warning message is *probably* irrelevant; to make it go away you
> would need to install the Matrix package from source on your machine
> (the binary packages on CRAN are built with the latest R version of a
> particular release series).
>
>    A preliminary investigation on my side had the same general
> conclusions (fitting with 1.1-23 and 1.1-26 gave identical answers). I'm
> afraid that if you have tried with both versions of the package and
> can't replicate your former results exactly then, logically, *the
> lme4/lmerTest package versions cannot be the source of the problem*;
> some other aspect of your setup must have changed. Numerical
> computations are, unfortunately, subject to a great deal of
> (small-scale) instability due to changes in underlying linear algebra
> packages, compilers, etc..
>
>   I'm not sure what else we can do to help.
>
>    sincerely
>     Ben Bolker
>
>
>

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