@Override
protected void iterate() {
Population offspring = new Population();
int populationSize = population.size();
while (offspring.size() < populationSize) {
Solution[] parents = selection.select(variation.getArity(), population);
Solution[] children = variation.evolve(parents);
offspring.addAll(children);
}
evaluateAll(offspring);
population.addAll(offspring);
fitnessEvaluator.evaluate(population);
while (population.size() > populationSize) {
int worstIndex = findWorstIndex();
fitnessEvaluator.removeAndUpdate(population, worstIndex);
}
}
@Override
protected void iterate() {
// mating and selection to generate offspring
Population offspring = new Population();
int populationSize = population.size();
while (offspring.size() < numberOfOffspring) {
Solution[] parents = selection.select(variation.getArity(), population);
Solution[] children = variation.evolve(parents);
offspring.addAll(children);
}
// evaluate the offspring
evaluateAll(offspring);
// evaluate the fitness of the population and offspring
offspring.addAll(population);
fitnessEvaluator.evaluate(offspring);
// perform environmental selection to downselect the next population
population.clear();
population.addAll(truncate(offspring, populationSize));
}