[Developers] FW: [ADMB Users] Cubic splines

Mon May 23 08:59:12 PDT 2011

From: Luis Ridao [mailto:luridao at gmail.com]
Sent: Monday, May 23, 2011 2:18 AM
To: Mark Payne
Cc: Ian Taylor; Mark Maunder; users at admb-project.org; Alexandre Aires-Da-Silva; Simon Hoyle; ???
Subject: Re: [ADMB Users] Cubic splines

I wish to add that splines in version 10.1 (at least in my case) do not work.
The same code used to run without problems on 10.0.

Best,
LRC

P.S: I have raised this issue previously on this list.
On Mon, May 23, 2011 at 9:50 AM, Mark Payne <mpa at aqua.dtu.dk<mailto:mpa at aqua.dtu.dk>> wrote:
Are Splines fulled implemented in both ADMB and ADMB-RE? I struct some problems with them in ADMB-RE, but haven't had time to look closer as yet....

-----Original Message-----
From: users-bounces at admb-project.org<mailto:users-bounces at admb-project.org> on behalf of Ian Taylor
Sent: Fri 5/20/2011 9:00 PM
To: 'Mark Maunder'; users at admb-project.org<mailto:users at admb-project.org>
Cc: 'Alexandre Aires-Da-Silva'; '???'; 'Simon Hoyle'
Subject: Re: [ADMB Users] Cubic splines

Hi Mark,

I found http://en.wikipedia.org/wiki/Spline_interpolation to be informative.

Also, inspired by your email, I've discovered that there's very useful
information here:

http://admb-project.org/documentation/api/group__cub__spline.html
I just added that 2nd link to the FAQ item about splines, but obviously
that's no substitute for some proper documentation in the user manual.

-Ian

From: Mark Maunder [mailto:mmaunder at iattc.org<mailto:mmaunder at iattc.org>]
Sent: Friday, May 20, 2011 11:40 AM
To: users at admb-project.org<mailto:users at admb-project.org>
Cc: 'Jim.Ianelli at noaa.gov<mailto:Jim.Ianelli at noaa.gov>'; Ian Taylor; '???'; 'Simon Hoyle'; Alexandre
Aires-Da-Silva
Subject: Cubic splines

Does anyone have documentation on how cubic splines are implemented in ADMB?
Or a simple description of how cubic splines are implemented in general.

There are some examples on how to use them in ADMB

http://admb-project.org/community/tutorials-and-examples/splines

http://admb-project.org/community/tutorials-and-examples/splines/splines.tpl
/view?searchterm=spline<http://admb-project.org/community/tutorials-and-examples/splines/splines.tpl%0d%0a/view?searchterm=spline>

http://groups.google.com/group/admb-users/browse_thread/thread/e6ba196af3478
dc0/1952dcc0dfbb6241?#1952dcc0dfbb6241<http://groups.google.com/group/admb-users/browse_thread/thread/e6ba196af3478%0d%0adc0/1952dcc0dfbb6241?#1952dcc0dfbb6241>

Thanks,

Mark

Mark Maunder

Head of the Stock Assessment Program

Inter-American  Tropical Tuna Commission

President

ADMB Foundation

8604 La Jolla Shores Drive
La Jolla, CA, 92037-1508, USA
Tel: (858) 546-7027<tel:%28858%29%20546-7027>
Fax: (858) 546-7133<tel:%28858%29%20546-7133>
mmaunder at iattc.org<mailto:mmaunder at iattc.org>
http://www.fisheriesstockassessment.com/TikiWiki/tiki-index.php?page=Mark+Ma
under

Visit the AD Model Builder project at
 <http://admb-project.org/> http://admb-project.org/

See the following website for information on fisheries stock assessment

http://www.fisheriesstockassessment.com/

From: users-bounces at admb-project.org<mailto:users-bounces at admb-project.org> [mailto:users-bounces at admb-project.org<mailto:users-bounces at admb-project.org>]
On Behalf Of Campbell, Alex
Sent: Thursday, May 19, 2011 6:15 PM
To: users at admb-project.org<mailto:users at admb-project.org>
Subject: Re: [ADMB Users] 10.1 ic > imax

admb 10.0 and 9.1 on linux give me the same behaviour. so not a version
thing. one day "soon" i'll find time to debug..

convergence critieria is not necessarily the issue because that determines
ultimate convergence, not the question of whether the process has hung

grepping "ic > imax" points me to fmmtr1.cpp and newfmin.cpp but without
debugging i'm not much wiser!

 -alex

 _____

From: users-bounces at admb-project.org<mailto:users-bounces at admb-project.org> [mailto:users-bounces at admb-project.org<mailto:users-bounces at admb-project.org>]
On Behalf Of Campbell, Alex
Sent: Friday, 13 May 2011 4:33 PM
To: users at admb-project.org<mailto:users at admb-project.org>
Subject: [ADMB Users] 10.1 ic > imax

Hi folks
I've recently installed admb 10.1 on a 'real' system (SuSE Linux Enterprise
Server 11 SP1, gcc 4.3) and I've noticed different behaviour vs my 32-bit
admb 10.0 windoze setup. Specifically the ic > imax is minimum attained
issue pops up on the 10.1 where it does not on the 10.0. Both installations
give me the same parameter estimates, but obviously a) something is
different, b) it appears to be worse in the newer version and c) it would be
nice to know why. The first thing that came to mind is that the default
value of the convergence criterion might have changed between 10.0 and 10.1
but I ran the new system with -crit 1e-4 and same behaviour.

Any ideas?

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