@Override
public NumberStatistics.Builder<G, R> evaluate(
final Iterable<? extends Phenotype<G, R>> population,
final int generation,
final Optimize opt) {
final Builder<G, R> builder = new Builder<>();
builder.generation(generation);
builder.optimize(opt);
final MinMax<Phenotype<G, R>> minMax = new MinMax<>();
final Variance<Integer> age = new Variance<>();
final Variance<R> fitness = new Variance<>();
accumulators.<Phenotype<G, R>>accumulate(
population,
minMax,
age.map(Phenotype.Age(generation)),
fitness.map(Phenotype.<R>Fitness()));
builder.bestPhenotype(opt.best(minMax.getMax(), minMax.getMin()));
builder.worstPhenotype(opt.worst(minMax.getMax(), minMax.getMin()));
builder.fitnessMean(fitness.getMean());
builder.fitnessVariance(fitness.getVariance());
builder.samples((int) minMax.getSamples());
builder.ageMean(age.getMean());
builder.ageVariance(age.getVariance());
builder.standardError(fitness.getStandardError());
return builder;
}
