/*
// Crossover Genomes
private static Genome crossover(Genome genome1, Genome genome2) {
Genome offspring = new Genome(3,2,1);
// Loop through genes
for (int i = 0; i < genome1.size(); i++) {
// Crossover
if (Math.random() <= uniformRate) {
offspring.setGene(i, genome1.getGene(i));
} else {
offspring.setGene(i, genome2.getGene(i));
}
}
return offspring;
}
*/
// Mutate a genome
public static void mutateGenome(Genome genome)
{
foreach (GeneLink link in genome.getLinks()){
GeneNode source = genome.nodes[link.in_layer][link.in_place];
//if (Random.value <= source.maxDiff){ // used to be mutationRate
if (Random.value <= mutationRate){
if (Random.value <= uniformRate){
link.weight = link.weight + learningrate;
}
else {
link.weight = link.weight - learningrate;
}
}
}
foreach (GeneNode node in genome.getNodes()){
if (Random.value <= mutationRate)
{
if (Random.value <= uniformRate)
{
node.bias = node.bias + learningrate;
}
else
{
node.bias = node.bias - learningrate;
}
}
}
// must not add to input or output layers
for (int i = 1; i < genome.nrOfNodeLayers() - 1; i++)
{
if (Random.value <= layerMutationRate)
{
genome.addNewNodeToLayer(i);
}
}
}