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The eval.subpop.i.* params are for evaluation purposes only. If you write a new evaluator, you would not need them. On Jan 10, 2007, at 8:16 AM, SUBSCRIBE ECJ-INTEREST-L T. S. Yo wrote: > Hi, > > I have a question about coevolution, to be more specific, it is > about the > class MultiPopCoevolutionaryEvaluator. > > In this class, a set of parameters with prefix "eval.subpop.i" are > defined > for each subpopulation, i.e., "num-elites", "num-random-ind", "num- > ind", and > "select". > > Because I am writing a new Evaluator class for coevolution, I have the > following question : is it "necessary" to use these parameters to > define > the breeding of each subpopulation in coevolution? May I just > define two > breeding pipeline like this: > ---------------------------------------------- > pop.subpops = 2 > > breed.elite.0 = 10 > pop.subpop.0.species.pipe = ec.vector.breed.VectorMutationPipeline > pop.subpop.0.species.pipe.source.0 = > ec.vector.breed.VectorCrossoverPipeline > pop.subpop.0.species.pipe.source.0.source.0 = exp.util.RankSelection > pop.subpop.0.species.pipe.source.0.source.1 = exp.util.RankSelection > > breed.elite.1 = 10 > pop.subpop.1.species.pipe = ec.vector.breed.VectorMutationPipeline > pop.subpop.1.species.pipe.source.0 = > ec.vector.breed.VectorCrossoverPipeline > pop.subpop.1.species.pipe.source.0.source.0 = exp.util.RankSelection > pop.subpop.1.species.pipe.source.0.source.1 = exp.util.RankSelection > ----------------------------------------------- > and ignore these eval.subpop.i.* in my own Evaluator class? > > Actually, in the class "CompetitiveEvaluator", there is no such > parameters, > so I wonder if I must handle the selection in an Evaluator class. > > Thanks in advance. > > Ting-Shuo Yo