Re: [Cilib-users] mutation for PSO

[<lab...@gm...>]

Also, I think that to handle mutation for a bit vector, the setReal method  
in Bit.java should be:

public void setReal(double value) {
if (value <= 0.5)
this.state = false;
else this.state = true;

}

instead of
public void setReal(double value) {
if (value == 0.0)
this.state = false;
else this.state = true;

}
Do you agree?


On Jan 30, 2009 10:52am, lab...@gm... wrote:
> Yes, that works but it seems to me that there is a bug in the dimension  
that is set. Shouldn't it be:
> position.setReal(dimension,tmp) instead of position.setReal(i,tmp) in the  
mutate(particle) function. Do you agree?
> TIA.
>
> On Jan 30, 2009 8:23am, Gary Pampara gpa...@gm...> wrote:
> > Patch attached.
> >
> >
> >
> > I've had no means to test it and the change is very small. Please let  
me know if it works. From the looks of the error, this should solve it.
> >
> >
> >
> > I've committed the patch to the master branch already.
> >
> >
> >
> > Regards,
> >
> > Gary
> >
> >
> >
> > Gary Pampara wrote:
> >
> >
> > Sure thing.
> >
> >
> >
> > I'll post the patch once it's done. Should be a very minor change.
> >
> >
> >
> > Regards,
> >
> > Gary
> >
> >
> >
> > lab...@gm... wrote:
> >
> >
> > Hello,
> >
> >
> >
> > If the patch for this problem could be posted on the mailing list, I  
could update my local version before waiting for the new version. TIA.
> >
> >
> >
> >
> >
> > On Jan 29, 2009 11:09am, Gary Pampara gpa...@gm...> wrote:
> >
> > > Hi,
> >
> > >
> >
> > >
> >
> > >
> >
> > > Yes, this is definitely a bug. It should work for Ints as well. I'll  
post a patch for a correction to this issue in a while.
> >
> > >
> >
> > >
> >
> > >
> >
> > > We are currently refactoring quite a bit in the library to make  
various operations / usage issues better, as well as a major update to the  
Javadoc. I'll just need to create a branch to apply the fix.
> >
> > >
> >
> > >
> >
> > >
> >
> > > Would you like the patch posted on the mailing list, or a direct  
email? This will then also be included in the next release.
> >
> > >
> >
> > >
> >
> > >
> >
> > > Thanks for raising this :)
> >
> > >
> >
> > >
> >
> > >
> >
> > > Regards,
> >
> > >
> >
> > > Gary
> >
> > >
> >
> > >
> >
> > >
> >
> > > myriam abramson wrote:
> >
> > >
> >
> > >
> >
> > > Hello,
> >
> > >
> >
> > > I am trying to evolve integers for an allocation problem, Z(0,20)^10,  
and I tried to specific MutationPositionUpdateStrategy but unfortunately it  
does not seem to work for integers. See trace below. Is there a rational  
for that that I'm missing? I was thinking that instead of evolving a  
position by incremental velocity changes, mutation would sometimes just  
produce a new integer. Please let me know if that makes sense. It wouldn't  
be too hard to implement it on my end.
> >
> > >
> >
> > >
> >
> > >
> >
> > > Exception in thread "main" java.lang.ClassCastException:  
net.sourceforge.cilib.type.types.Int  
http://net.sourceforge.cilib.type.types.Int> cannot be cast to  
net.sourceforge.cilib.type.types.Real
> >
> > >
> >
> > > at  
net.sourceforge.cilib.pso.positionupdatestrategies.MutationPositionUpdateStrategy.mutate(MutationPositionUpdateStrategy.java:141)
> >
> > >
> >
> > > at  
net.sourceforge.cilib.pso.positionupdatestrategies.MutationPositionUpdateStrategy.updatePosition(MutationPositionUpdateStrategy.java:118)
> >
> > >
> >
> > > at  
net.sourceforge.cilib.pso.particle.StandardParticle.updatePosition(StandardParticle.java:156)
> >
> > >
> >
> > > at  
net.sourceforge.cilib.pso.iterationstrategies.SynchronousIterationStrategy.performIteration(SynchronousIterationStrategy.java:70)
> >
> > >
> >
> > > at  
net.sourceforge.cilib.pso.iterationstrategies.SynchronousIterationStrategy.performIteration(SynchronousIterationStrategy.java:36)
> >
> > >
> >
> > > at net.sourceforge.cilib.pso.PSO.algorithmIteration(PSO.java:125)
> >
> > >
> >
> > > at  
net.sourceforge.cilib.algorithm.Algorithm.performIteration(Algorithm.java:140)
> >
> > >
> >
> > > at net.sourceforge.cilib.algorithm.Algorithm.run(Algorithm.java:182)
> >
> > >
> >
> > > at  
mil.navy.nrl.optimization.route.RoutePlanning.run(RoutePlanning.java:142)
> >
> > >
> >
> > > at  
mil.navy.nrl.optimization.route.RoutePlanning.main(RoutePlanning.java:192)
> >
> > >
> >
> > >
> >
> > >
> >
> > >
> >
> > >
> >
> > >  
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