Problem when running multiple runs of MOEAD

[irfanyounas]

Hi,
When I try to run MOEAD with more than 1 independent runs, I get the following error:

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 357
at org.uma.jmetal.algorithm.multiobjective.moead.AbstractMOEAD.updateNeighborhood(AbstractMOEAD.java:297)
at org.uma.jmetal.algorithm.multiobjective.moead.MOEAD.run(MOEAD.java:83)
at org.uma.jmetal.util.experiment.util.ExperimentAlgorithm.runAlgorithm(ExperimentAlgorithm.java:82)
at org.uma.jmetal.util.experiment.component.ExecuteAlgorithms.lambda$0(ExecuteAlgorithms.java:56)
at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1374)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
at java.util.stream.ForEachOps$ForEachTask.compute(ForEachOps.java:291)
at java.util.concurrent.CountedCompleter.exec(CountedCompleter.java:731)
at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
at java.util.concurrent.ForkJoinTask.doInvoke(ForkJoinTask.java:401)
at java.util.concurrent.ForkJoinTask.invoke(ForkJoinTask.java:734)
at java.util.stream.ForEachOps$ForEachOp.evaluateParallel(ForEachOps.java:160)
at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateParallel(ForEachOps.java:174)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:233)
at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:583)
at org.uma.jmetal.util.experiment.component.ExecuteAlgorithms.run(ExecuteAlgorithms.java:56)
at org.uma.jmetal.runner.multiobjective.Main.runExperiment(Main.java:105)
at org.uma.jmetal.runner.multiobjective.Main.main(Main.java:74)

[Matthieu Vergne]

Hi,

This stack trace leads to AbstractMOEAD.java:297, but this line cannot generate such an exception. I assume you are using a previous version of jMetal.

Could you try the last version?