Re: [Cilib-users] mutation for PSO

[Gary P. <gpa...@gm...>]

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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