Examples of ec.Fitness

ec.Fitness
Fitness is a prototype which describes the fitness of an individual. Every individual contains exactly one Fitness object. Fitness objects are compared to each other with the equivalentTo() and betterThan(), etc. methods.
Rules:

comparison method

a > b a.betterThan(b)
a >= b a.betterThan(b) || a.equivalentTo(b)
a = b a.equivalentTo(b)
This applies even to multiobjective pareto-style dominance, eg:
- a dominates b :: a > b
- a and b do not dominate each other :: a = b
- b dominates a :: a < b
Parameter bases

fit default fitness base

@author Sean Luke @version 1.0

    
    public void postEvaluationStatistics(EvolutionState state) {
        super.postEvaluationStatistics(state);
        
        for (int subPop = 0; subPop < state.population.subpops.length; ++subPop) {
            Fitness bestFit = state.population.subpops[subPop].individuals[0].fitness;
            for (int i = 1; i < state.population.subpops[subPop].individuals.length; ++i) {
                Fitness fit = state.population.subpops[subPop].individuals[i].fitness;
                if (fit.betterThan(bestFit))
                    bestFit = fit;
                
                //Best individual is found, make a bar graph
                makeBar(seriesID[subPop], ((DoubleVectorIndividual)state.population.subpops[subPop].individuals[i]).genome);
                }

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    public void postEvaluationStatistics(EvolutionState state) {
        super.postEvaluationStatistics(state);
        
        for (int subPop = 0; subPop < state.population.subpops.length; ++subPop) {
            Fitness bestFit = state.population.subpops[subPop].individuals[0].fitness;
            for (int i = 1; i < state.population.subpops[subPop].individuals.length; ++i) {
                Fitness fit = state.population.subpops[subPop].individuals[i].fitness;
                if (fit.betterThan(bestFit))
                    bestFit = fit;
                }


            addDataPoint(seriesID[subPop], state.generation, bestFit.fitness());
            }

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Related Classes of ec.Fitness

ec.app.gui.SimpleBarChartStatistics

ec.app.gui.SimpleXYSeriesChartStatistics

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comparison	method
a > b	a.betterThan(b)
a >= b	a.betterThan(b) \|\| a.equivalentTo(b)
a = b	a.equivalentTo(b)