<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body bgcolor="#ffffff" text="#000000">
First, let me note that if it hasn't been fixed already, it would be
very valuable to reintroduce the option to output your ADMB version
number at the command line. And maybe we could have more digits in
the version number or also add output of the source code revision
number.<br>
<br>
Using 64-bit linux with ADMB 10.1 (installed through the IDE and I
think without bug fixes added in), I get the following:<br>
<blockquote><tt>$ ./gbytffall -maxfn 5000<br>
<br>
...<br>
<br>
Function minimizer not making progress ... is minimum attained?<br>
Minimprove criterion = 0.0000e+00<br>
<br>
- final statistics:<br>
4 variables; iteration 1556; function evaluation 2091<br>
Function value -5.5219e+00; maximum gradient component mag
-5.5747e-04<br>
Exit code = 1; converg criter 1.0000e-04<br>
Var Value Gradient |Var Value Gradient |Var
Value Gradient <br>
1 -2.07428 1.36602e-04 | 2 2.48655 4.00509e-05 | 3
-0.55205 -5.57470e-04<br>
4 -2.08650 -2.06330e-08 |<br>
Estimating row 1 out of 4 for hessian<br>
Estimating row 2 out of 4 for hessian<br>
Estimating row 3 out of 4 for hessian<br>
Estimating row 4 out of 4 for hessian<br>
Warning -- Hessian does not appear to be positive definite<br>
Hessian does not appear to be positive definite<br>
</tt></blockquote>
and the quite different parameter estimates (no std file):<br>
<blockquote><tt># Number of parameters = 4 Objective function value
= -5.52188 Maximum gradient component = 0.000557470</tt><br>
<tt>
# r:</tt><br>
<tt>
0.558207605473</tt><br>
<tt>
# B1:</tt><br>
<tt>
101608.785494</tt><br>
<tt>
# K:</tt><br>
<tt>
83033.1715424</tt><br>
<tt>
# lnq:</tt><br>
<tt>
-2.08649743989</tt><br>
</blockquote>
When I get a chance, I can try to compile the bug-fixed version.<br>
-Ian<br>
<br>
On 10/05/2011 11:27 AM, Derek Seiple wrote:
<blockquote
cite="mid:CA+7JSUi1mwcnZK8-PvbDgGDbHX4ikeKp0-1FnXo97ZRUWY_fJg@mail.gmail.com"
type="cite">
<pre wrap="">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 <a class="moz-txt-link-rfc2396E" href="mailto:davef@otter-rsch.com"><davef@otter-rsch.com></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">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
<a class="moz-txt-link-abbreviated" href="mailto:Users@admb-project.org">Users@admb-project.org</a>
<a class="moz-txt-link-freetext" href="http://lists.admb-project.org/mailman/listinfo/users">http://lists.admb-project.org/mailman/listinfo/users</a>
</pre>
<pre wrap="">
<fieldset class="mimeAttachmentHeader"></fieldset>
_______________________________________________
Users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Users@admb-project.org">Users@admb-project.org</a>
<a class="moz-txt-link-freetext" href="http://lists.admb-project.org/mailman/listinfo/users">http://lists.admb-project.org/mailman/listinfo/users</a>
</pre>
</blockquote>
</blockquote>
</body>
</html>