private static void MutateNeuronAddRandom(Ann ann)
{
int[] layers = ann.GetHiddenLayers();
int layer = layers.Length != 0 ? layers[Util.rand.Next(layers.Length)] : 0;
int[] neuronPositions = ann.GetNeuronsForLayer(layer).Select(x => x.NeuronPosition).ToArray();
int neuronId = 0;
bool keepSearching = true;
while (keepSearching)
{
if (neuronPositions.Contains(neuronId))
{
neuronId++;
}
else
{
keepSearching = false;
}
}
if (!HelperDoesNeuronExist(ann, layer, neuronId))
{
ann.hiddenNeurons.Add(new Neuron(layer, neuronId));
}
}
private static void MutateNeuronLayerRandomExisting(Ann ann)
{
if (ann.hiddenNeurons.Count == 0)
{
return;
}
int[] layers = ann.GetHiddenLayers();
int randomLayer = layers[Util.rand.Next(layers.Length)];
Neuron neuron = ann.hiddenNeurons[Util.rand.Next(ann.hiddenNeurons.Count)];
if (!HelperDoesNeuronExist(ann, randomLayer, neuron.NeuronPosition))
{
neuron.Layer = randomLayer;
}
}