Re: [Swarm-Support] "nan" message

[David Camacho Trujillo]

I thank you very much for your responses

Yes, you are right, it should say: “not a number”. 
Also, there is a variable, initPopSize, which I have to initialize like 0,
otherwise I get the error message:

*** event raised for error: InvalidCombination
UniformUnsignedDist: Requested random number with range 4294967295,
but your generator only supports a range of 4294967294
*** execution terminating due to error
Symbol.m:1

However,what really surprise me is that I can get (printf) the proper answer on
the GUI version, despite the numbers where so small (e.g. 0.008)  but not on the
batch mode. I have shift the results from this method  and now on the GUI
version I get a “better” range of results (e.g 0.8)  but still on the batch mode
I just can get “nan”.
Now I am traying with this last recommendations form Steve.
I will see...

David

> 
> i don't know what the underlying problem is,
> but note that NaN is, i think, short for "not a number".
> In any case, it often comes up when a program does
> a divide by zero or other math op that results
> in an undefined result (ie, a result not in
> the allowed range of bit values for floating point numbers).
> 
> So...perhaps the way you are initializing things
> leads to some variable getting intialized as 0,
> and then its used in a division?
> 
> - r
> 
> 
> Rick Riolo                           address@hidden
> Center for the Study of Complex Systems (CSCS)
> 4477 Randall Lab
> University of Michigan         Ann Arbor MI 48109-1120
> Phone: 734 763 3323                  Fax: 734 763 9267
> http://cscs.umich.edu/~rlr
> 
> On Wed, 22 Jun 2005, David Camacho Trujillo wrote:
> 
> > Date: Wed, 22 Jun 2005 12:28:30 +0200 (CEST)
> > From: David Camacho Trujillo <address@hidden>
> > Reply-To: Swarm Support <address@hidden>
> > To: Swarm Support <address@hidden>
> > Subject: [Swarm-Support] "nan" message
> >
> > Hi swarm community,
> >
> >
> > I have a very simple problem that doesn´t let me sleep!
> > I am utilizing a GA (a SWARM contribution) and under both GUI or batch
> mode it
> > runs fine on the demo. But when I run this GA with my model, the
> > getFitness method returns a “NAN” (not an integer) message  on the
> batch mode.
> >
> > I am new utilizing this batch mode, and on a previous problem, I have
> realize
> > the way you initialized your model with the ObjectLoader (deprecated I
> believe,
> > but runs fine on the demo version) method make a big difference.
> Therefore, I
> > have exactly the same parameters that initialized the GUI method there
> but still
> > this problem is there.
> >
> > For any comment, many thanks in advance,
> > David
> >
> >
> >
> > _______________________________________________
> > Support mailing list
> > address@hidden
> > http://www.swarm.org/mailman/listinfo/support
> >
> 
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David Camacho