IllegalArgumentException: Too many seed candidates for specified population size. about watchmaker

[guliashvili]

Hi,
Can you share FloatGenotypeFactory code?

[DcortezMeleth]

Sure. It's just class wrapping list of Doubles. AbstractGenotype contains nothing at all.

    public class FloatGenotype extends AbstractGenotype {

        private List<Double> genes;

        public FloatGenotype(final List<Double> genes) {
            super();
            this.genes = genes;
        }

        public FloatGenotype(final FloatGenotype genotype) {
            super();
            this.genes = genotype.getGenes();
        }

        public List<Double> getGenes() {
            return genes;
        }

        public void setGenes(final List<Double> genes) {
            this.genes = genes;
        }

        @Override
        public String toString() {
            String result = "[";
            for(Double f : getGenes()) {
                result += f + " ";
            }
            return result + "] ";
        }
    }

[guliashvili]

Hi,
It's FloatGenotype I was interested in FloatGenotypeFactory

[DcortezMeleth]

My mistake.

public class FloatGenotypeFactory extends AbstractGenotypeFactory<FloatGenotype> {

    private static final Double UPPERBOUND = 1.0d;

    private static final Double LOWERBOUND = 0.0d;

    private static final Integer DIM = 3;

    private Integer dim;

    public FloatGenotypeFactory() {
        super(LOWERBOUND, UPPERBOUND);
        this.dim = DIM;
    }

    public FloatGenotypeFactory(final Double lowerbound, final Double upperbound, final Integer dim) {
        super(lowerbound, upperbound);
        this.dim = dim;
    }

    @Override
    public FloatGenotype generateRandomCandidate(final Random rng) {
        List<Double> genes = new ArrayList<>();
        for(int i=0; i<dim; i++) {
            genes.add(uniform(rng));
        }
        return new FloatGenotype(genes);
    }
}

public abstract class AbstractGenotypeFactory<T extends AbstractGenotype> extends AbstractCandidateFactory<T> {

    private Double lowerbound;

    private Double upperbound;

    public AbstractGenotypeFactory(final Double lowerbound, final Double upperbound) {
        this.lowerbound = lowerbound;
        this.upperbound = upperbound;
    }

    protected Double uniform(final Random rng) {
        return rng.nextDouble() * (this.upperbound - this.lowerbound) + this.lowerbound ;
    }
}

[guliashvili]

Hi,
I had similar problem but not same. In my case sometimes population size was less then elite count (even in configuration was not). I resolved it in my forked version, seems like it was top of iceberg, and framework for some reasons can keep population on fixed size. If you can provide me with your whole source code, I'll try to resolve the problem in my fork(as this repo is not changed for years)