mailRe: [bug #18019] Gridsearch appears not to be working when upper/lower bounds are set


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Posted by Edward d'Auvergne on April 12, 2011 - 11:27:
Hi,

I found the problem to be in minfx.  Strangely, this used to work
before as I had performed grid searches with an increment of 1 in one
of the dimensions.  The problem is that when there is an increment of
one, you need to pick a value between the lower and upper bound
values.  Minfx is now taking the average value.

To use this, you can delete the minfx directory in the 1.3.8
installation, and get the new version of minfx by typing:

$ svn co http://svn.gna.org/svn/minfx/trunk/minfx

If you don't have access to svn, you might have to wait until I
release a new version of relax.  However due to holidays, I will
unfortunately not be able to do this before mid May.

Regards,

Edward



On 12 April 2011 10:38, Tiago Pais <tpais@xxxxxxxxxxx> wrote:
Hi Edward,
Yes I am sorry about the private label. I set it initially to private
because I was going to include the structure of the protein attached, but
then I realized that I didn't need to send the whole thing. Eventually I
forgot to set the label back to public. So, yes, you can use the info as you
wish to try and solve the issue - including the test suite.

Hope to hear from you soon.
Cheers
TP

-----Original Message-----
From: Edward d'Auvergne [mailto:edward.dauvergne@xxxxxxxxx]
Sent: terça-feira, 12 de Abril de 2011 7:51
To: anonymous
Cc: Tiago Pais; relax-devel@xxxxxxx
Subject: Re: [bug #18019] Gridsearch appears not to be working when
upper/lower bounds are set

Hi,

Is there any reason this bug report has been made private?  The data
is so truncated, there's nothing much anyone can do with it.  The
privacy tag is usually reserved for security issues whereby it needs
to be kept private until a fix is found and released.  Then the bug
can be made public.  I'm looking into this now, but I'm not exactly
sure what is happening.  Is it ok if I include this data, or part of
it, into the relax test suite?  This will significantly help in the
debugging and will make sure this bug never returns!

Cheers,

Edward



On 11 April 2011 13:42, anonymous <NO-REPLY.INVALID-ADDRESS@xxxxxxx> wrote:

URL:
 <http://gna.org/bugs/?18019>

                Summary: Gridsearch appears not to be working when
upper/lower bounds are set
                Project: relax
           Submitted by: None
           Submitted on: Mon 11 Apr 2011 11:42:49 AM UTC
               Category: relax's source code
               Severity: 3 - Normal
               Priority: 5 - Normal
                 Status: None
                Privacy: Private
            Assigned to: None
        Originator Name: Tiago Pais
       Originator Email: tpais@xxxxxxxxxxx
            Open/Closed: Open
        Discussion Lock: Any
                Release: 1.3.8
       Operating System: GNU/Linux

   _______________________________________________________

Details:

My system is Ubuntu-9.04:
When I perform a gridsearch, exclusively for m5, with the lower and upper
bounds set to: lower=[0.111, 0, -0.0], upper=[0.111, 1.00, 200] I keep
seeing
the following message during the calculations:



"Min f:              3474.82



k: 3860     xk: [       0.111,    0.066667,          -0] fk: nan


Increment:          array([ 5, 16, 16])

Params:             array([ 0.111,  1.   ,    Inf])

Min params:         array([ 0.111     ,  0.06666667, -0.        ])

f:                  nan



Min f:              3474.82



k: 3861     xk: [       0.111,    0.066667,          -0] fk: nan


Increment:          array([ 6, 16, 16])

Params:             array([ 0.111,  1.   ,    Inf])

Min params:         array([ 0.111     ,  0.06666667, -0.        ])

f:                  nan

"

And at the end the tauS is zero for all spins and the S2s is always close
to
1.

Attached follows the script that I am using and a truncated sample of my
data
set (I hope it is not too truncated!) as well as the results that I am
getting.

If you need more info let me know.
Thanks
Regards
Tiago P



   _______________________________________________________

File Attachments:


-------------------------------------------------------
Date: Mon 11 Apr 2011 11:42:49 AM UTC  Name: ErrorReportRelax.tar.gz
 Size:
8kB   By: None

<http://gna.org/bugs/download.php?file_id=12833>

   _______________________________________________________

Reply to this item at:

 <http://gna.org/bugs/?18019>

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