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;
}
/**
* This is a sample of creating a new Population with 'size_population' organisms , and simulation
* of XOR example This sample can be started in two modality : -cold : each time the population is
* re-created from 0; -warm : each time the population re-read last population created and restart
* from last epoch. (the population backup file is : 'c:\\jneat\\dati\\population.primitive'
*/
public static void Experiment3(int size_population, int mode, int gens) {
Population pop = null;
String fname_prefix = "c:\\jneat\\dati\\population.primitive";
String fnamebuf;
int gen;
int id;
int expcount = 0;
String mask6 = "000000";
DecimalFormat fmt6 = new DecimalFormat(mask6);
System.out.println("------ Start experiment 3 -------");
for (expcount = 0; expcount < Neat.p_num_runs; expcount++) {
System.out.println(" Spawned population off genome");
double prb_link = 0.50;
boolean recurrent = true;
// default cold is : 3 sensor (1 for bias) , 1 out , 5 nodes max, no recurrent
if (mode == NeatConstant.COLD)
pop = new Population(size_population, 3, 1, 5, recurrent, prb_link); // cold start-up
// pop = new Population(size_population, 3, 1, 5, recurrent, prb_link); // cold start-up
else pop = new Population(fname_prefix + ".last"); // warm start-up
pop.verify();
System.out.print("\n---------------- Generation starting with----------");
System.out.print("\n Population : innov num = " + pop.getCur_innov_num());
System.out.print("\n : cur_node_id = " + pop.getCur_node_id());
System.out.print("\n---------------------------------------------------");
System.out.print("\n");
for (gen = 1; gen <= gens; gen++) {
System.out.print("\n---------------- Generation ----------------------" + gen);
fnamebuf = "g_" + fmt6.format(gen);
boolean esito = xor_epoch(pop, gen, fnamebuf);
System.out.print("\n Population : innov num = " + pop.getCur_innov_num());
System.out.print("\n : cur_node_id = " + pop.getCur_node_id());
System.out.print("\n result : " + esito);
}
}
// backup of population for warm startup
pop.print_to_filename(fname_prefix + ".last");
System.out.println("\n\n End of experiment");
}
/**
* this is a standard experiment for XOR emulation; is passed a name of a started genome and a
* number of times can be execute this experiment;
*/
public static void Experiment1(String xFileName, int gens) {
String fname_prefix = "c:\\jneat\\dati\\population.natural";
Population pop = null;
StringTokenizer st;
String curword;
String xline;
String fnamebuf;
int gen;
IOseq xFile;
int id;
int expcount = 0;
String mask6 = "000000";
DecimalFormat fmt6 = new DecimalFormat(mask6);
System.out.println("------ Start experiment 1 -------");
xFile = new IOseq(xFileName);
boolean ret = xFile.IOseqOpenR();
if (ret) {
try {
System.out.println(" Start XOR experiment");
System.out.println(" .read start genome..");
xline = xFile.IOseqRead();
st = new StringTokenizer(xline);
// skip
curword = st.nextToken();
// id of genome can be readed
curword = st.nextToken();
id = Integer.parseInt(curword);
System.out.println(" .create genome id " + id);
Genome start_genome = new Genome(id, xFile);
// backup this 'initial' genome (is only for test
// if the read & write are correct
start_genome.print_to_filename("c:\\jneat\\dati\\genome.readed");
for (expcount = 0; expcount < Neat.p_num_runs; expcount++) {
System.out.println(" Spawned population off genome");
pop = new Population(start_genome, Neat.p_pop_size);
System.out.print("\n\n Verifying Spawned Pop");
pop.verify();
System.out.print("\n");
for (gen = 1; gen <= gens; gen++) {
System.out.print("\n---------------- E P O C H < " + gen + " >--------------");
fnamebuf = "g_" + fmt6.format(gen);
boolean esito = xor_epoch(pop, gen, fnamebuf);
}
System.out.print("\n Population : innov num = " + pop.getCur_innov_num());
System.out.print("\n : cur_node_id = " + pop.getCur_node_id());
pop.print_to_filename(fname_prefix);
}
} catch (Throwable e) {
System.err.println(e + " : error during read " + xFileName);
}
xFile.IOseqCloseR();
} else System.err.print("\n : error during open " + xFileName);
System.out.println("\n\n End of experiment");
}