private static void MutateSynapseFromLayer(Ann ann)
{
if (ann.synapses.Count == 0)
{
return;
}
Synapse synapse = ann.synapses[Util.rand.Next(ann.synapses.Count)];
int layer = ann.GetAllLayers()[Util.rand.Next(ann.GetAllLayers().Length)];
if (synapse.ToLayer != layer && !HelperDoesSynapseExist(ann, layer, synapse.FromNeuron, synapse.ToLayer, synapse.ToNeuron))
{
synapse.FromLayer = layer;
}
}
private static void MutateSynapseAddRandom(Ann ann)
{
if (ann.hiddenNeurons.Count == 0)
{
return;
}
int[] layers = ann.GetAllLayers();
int fromLayer = layers.Length != 0 ? layers[Util.rand.Next(layers.Length)] : 0;
int[] fromNeuronPositions = ann.GetNeuronsForLayer(fromLayer).Select(x => x.NeuronPosition).ToArray();
int fromNeuron = fromNeuronPositions[Util.rand.Next(fromNeuronPositions.Length)];
int toLayer = layers.Length != 0 ? layers[Util.rand.Next(layers.Length)] : 0;
int[] toNeuronPositions = ann.GetNeuronsForLayer(toLayer).Select(x => x.NeuronPosition).ToArray();
int toNeuron = toNeuronPositions[Util.rand.Next(toNeuronPositions.Length)];
if (toLayer != fromLayer && !HelperDoesSynapseExist(ann, fromLayer, fromNeuron, toLayer, toNeuron))
{
ann.synapses.Add(new Synapse(fromLayer, fromNeuron, toLayer, toNeuron));
}
}