public static boolean xor_epoch(Population pop, int generation, String filename) {
boolean esito = false;
// Evaluate each organism if exist the winner.........
boolean win = false;
Iterator itr_organism;
itr_organism = pop.organisms.iterator();
while (itr_organism.hasNext()) {
// point to organism
Organism _organism = ((Organism) itr_organism.next());
// evaluate
esito = xor_evaluate(_organism);
// if is a winner , store a flag
if (esito) win = true;
}
// compute average and max fitness for each species
Iterator itr_specie;
itr_specie = pop.species.iterator();
while (itr_specie.hasNext()) {
Species _specie = ((Species) itr_specie.next());
_specie.compute_average_fitness();
_specie.compute_max_fitness();
}
// Only print to file every print_every generations
if (win || (generation % Neat.p_print_every) == 0)
pop.print_to_file_by_species("c:\\jneat\\dati\\" + filename);
// if exist a winner write to file
if (win) {
int cnt = 0;
itr_organism = pop.getOrganisms().iterator();
while (itr_organism.hasNext()) {
Organism _organism = ((Organism) itr_organism.next());
if (_organism.winner) {
System.out.print("\n -WINNER IS #" + _organism.genome.genome_id);
_organism.getGenome().print_to_filename("c:\\jneat\\dati\\xor_win" + cnt);
cnt++;
}
}
}
// wait an epoch and make a reproductionof the best species
pop.epoch(generation);
if (win) {
System.out.print("\t\t** I HAVE FOUND A CHAMPION **");
return true;
} else return false;
}
