Different Crossover Operator for linear genotypes

[schrum2]

I've just uncovered that all experiments are using simple single-point crossover. The NumericArrayGenotype is hard-coded to use ArrayCrossover, which is single-point crossover.

SBX exists in the code, but there is no way to use it, even if it is defined at the crossover class with a command line parameter. Should also add support for multipoint crossover.

[schrum2]

It is now possible to specify the crossover class for real valued genotypes. I will test with SBX. Afterward, I may still want to add multipoint crossover.

[schrum2]

SBX test crashed with this error. Very confusing, but no time to look at it now.

java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
        at java.lang.reflect.Constructor.newInstance(Unknown Source)
        at edu.southwestern.util.ClassCreation.createObject(ClassCreation.java:75)
        at edu.southwestern.util.ClassCreation.createObject(ClassCreation.java:56)
        at edu.southwestern.util.ClassCreation.createObject(ClassCreation.java:43)
        at edu.southwestern.util.ClassCreation.createObject(ClassCreation.java:28)
        at edu.southwestern.MMNEAT.MMNEAT.loadClasses(MMNEAT.java:478)
        at edu.southwestern.MMNEAT.MMNEAT.run(MMNEAT.java:541)
        at edu.southwestern.MMNEAT.MMNEAT.evolutionaryRun(MMNEAT.java:813)
        at edu.southwestern.MMNEAT.MMNEAT.main(MMNEAT.java:773)
Caused by: java.lang.IndexOutOfBoundsException
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
        at java.lang.reflect.Constructor.newInstance(Unknown Source)
        at java.util.concurrent.ForkJoinTask.getThrowableException(Unknown Source)
        at java.util.concurrent.ForkJoinTask.reportException(Unknown Source)
        at java.util.concurrent.ForkJoinTask.invoke(Unknown Source)
        at java.util.stream.ForEachOps$ForEachOp.evaluateParallel(Unknown Source)
        at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateParallel(Unknown Source)
        at java.util.stream.AbstractPipeline.evaluate(Unknown Source)
        at java.util.stream.ReferencePipeline.forEach(Unknown Source)
        at java.util.stream.ReferencePipeline$Head.forEach(Unknown Source)
        at edu.southwestern.evolution.mapelites.MAPElites.initialize(MAPElites.java:380)
        at edu.southwestern.experiment.evolution.SteadyStateExperiment.<init>(SteadyStateExperiment.java:29)
        at edu.southwestern.experiment.evolution.SteadyStateExperiment.<init>(SteadyStateExperiment.java:24)
        ... 12 more
Caused by: java.lang.IndexOutOfBoundsException: Index: 1, Size: 1
        at java.util.ArrayList.rangeCheck(Unknown Source)
        at java.util.ArrayList.get(Unknown Source)
        at edu.southwestern.tasks.NoisyLonerTask.aggregateResults(NoisyLonerTask.java:244)
        at edu.southwestern.tasks.NoisyLonerTask.evaluate(NoisyLonerTask.java:144)
        at edu.southwestern.evolution.mapelites.MAPElites.lambda$initialize$0(MAPElites.java:381)
        at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(Unknown Source)
        at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(Unknown Source)
        at java.util.stream.AbstractPipeline.copyInto(Unknown Source)
        at java.util.stream.ForEachOps$ForEachTask.compute(Unknown Source)
        at java.util.concurrent.CountedCompleter.exec(Unknown Source)
        at java.util.concurrent.ForkJoinTask.doExec(Unknown Source)
        at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(Unknown Source)
        at java.util.concurrent.ForkJoinPool.runWorker(Unknown Source)
        at java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source)
java.lang.reflect.InvocationTargetException

[schrum2]

This error was actually a problem with multiobjective optimization ( #884 ) that is now fixed, but now there is a new error:

ERRRORRR:2: -3.6571372478235573 0.0034008391134564553 0.974436548450762

This happens directly inside of SBX and I'm not sure why since most of this code is simply extracted from elsewhere. Need to investigate further.

[schrum2]

Completely swapped out the SBX implementation with one from a different source (shown in comments). Might work

[schrum2]

SBX seems to work. Support for multipoint crossover will be a different issue

[schrum2]

Changed mind and worked on issue here instead. MultipointCrossover is now implemented. Also, an error in SBX was found. It needs to extend MultipointCrossover to work properly, which is now the case.