[ADMB Users] a difference in estimates between versions?

[Derek Seiple]

I ran Saang-Yoon's attached example on 32-bit ubuntu with version 9.1,
10.1, and the latest version with bug fixes. In ALL THREE I got the
following .std file.

 index   name   value      std dev
     1   r    4.9790e-01 4.4611e-02
     2   B1   8.8262e+04 9.0362e+03
     3   K    9.1796e+04 4.5790e+03
     4   lnq -2.1705e+00 1.4898e-01


There was no difference in values amongst the versions. You will note
though that these values are slightly different from the ones he
supplied for ADMB IDE 450-1. This suggests to me that it is either a
32-bit-64-bit difference or a windows difference.

Can anyone else run the attached model for 64-bit on linux and windows
or 32-bit on windows for the two versions of ADMB and report the .std
file for comparison?

Derek

On Wed, Oct 5, 2011 at 10:28 AM, dave fournier <davef at otter-rsch.com> wrote:
> It is always interesting to see what kind of posts produce the most
> response.
> certainly none of mine. Anyway
> there are a few standard things you can do to narrow this down.
> First is to take the output from each model and put it into the other
> version and see if the numbers
> stay the same. That verifies that the code produces the same function value.
> Also
> you could reduce the convergence criterion as in -crit 1.e-6 to see if you
> can get a little closer to the
> actual minimum.
>
> Although it is not relevant to the discussion your approximation to the
> differential equation
> for the population dynamics is gross.  See the semi-implicit version in the
> original
> manual for an idea of how to do it right.
> _______________________________________________
> Users mailing list
> Users at admb-project.org
> http://lists.admb-project.org/mailman/listinfo/users
>
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