private static void MutateSynapseFromNeuron(Ann ann)
{
if (HelperCountSynapses(ann) == 0)
{
return;
}
Neuron synapseNeuron = ann.GetAllNeurons()[Util.rand.Next(ann.GetAllNeurons().Count)];
if (synapseNeuron.synapses.Count == 0)
{
return;
}
Synapse synapse = synapseNeuron.synapses[Util.rand.Next(synapseNeuron.synapses.Count)];
int fromLayer = synapse.FromLayer;
Neuron[] neuronsInLayer = ann.GetNeuronsForLayer(fromLayer);
Neuron neuron = neuronsInLayer.Length != 0 ? neuronsInLayer[Util.rand.Next(neuronsInLayer.Length)] : null;
int newNeuronPosition = neuron != null ? neuron.NeuronPosition : 0;
if (!HelperDoesSynapseExist(ann, synapse.FromLayer, newNeuronPosition))
{
synapse.FromNeuron = newNeuronPosition;
}
}
private static void MutateSynapseWeightIncreaseRandom(Ann ann)
{
if (HelperCountSynapses(ann) == 0)
{
return;
}
Neuron synapseNeuron = ann.GetAllNeurons()[Util.rand.Next(ann.GetAllNeurons().Count)];
if (synapseNeuron.synapses.Count == 0)
{
return;
}
Synapse synapse = synapseNeuron.synapses[Util.rand.Next(synapseNeuron.synapses.Count)];
synapse.Weight += Util.rand.NextDouble();
}
private static void MutateSynapseFromLayer(Ann ann)
{
if (HelperCountSynapses(ann) == 0)
{
return;
}
Neuron synapseNeuron = ann.GetAllNeurons()[Util.rand.Next(ann.GetAllNeurons().Count)];
if (synapseNeuron.synapses.Count == 0)
{
return;
}
Synapse synapse = synapseNeuron.synapses[Util.rand.Next(synapseNeuron.synapses.Count)];
int layer = ann.GetAllLayers()[Util.rand.Next(ann.GetAllLayers().Length)];
if (!HelperDoesSynapseExist(ann, layer, synapse.FromNeuron))
{
synapse.FromLayer = layer;
}
}