internal override Agent CrossOver(Agent _partner)
{
NeatAgent offspring = new NeatAgent();
NeatAgent partner = (NeatAgent)_partner;
NeatAgent fittestAgent;
NeatAgent lessFitAgent;
fittestAgent = this.fitness > partner.fitness ? this : partner;
lessFitAgent = this.fitness >= partner.fitness ? partner : this;
fittestAgent.Connections.Sort();
lessFitAgent.Connections.Sort();
int maxInnovationNum = Math.Max(fittestAgent.GetMaxInnovationNum(), lessFitAgent.GetMaxInnovationNum());
if (maxInnovationNum != -1)
{
int innovationIndex = 0;
do
{
while (!(fittestAgent.LocalInnovationSet.Contains(innovationIndex)) &&
!(lessFitAgent.LocalInnovationSet.Contains(innovationIndex)))
{
innovationIndex++;
continue;
}
if (fittestAgent.LocalInnovationSet.Contains(innovationIndex) &&
!(lessFitAgent.LocalInnovationSet.Contains(innovationIndex)))
{
offspring.AddConnection(fittestAgent.GetConnectionByIN(innovationIndex));
}
else if (fittestAgent.LocalInnovationSet.Contains(innovationIndex) &&
lessFitAgent.LocalInnovationSet.Contains(innovationIndex))
{
if (fittestAgent.fitness / (fittestAgent.fitness + lessFitAgent.fitness) < RandomDouble())
{
offspring.AddConnection(fittestAgent.GetConnectionByIN(innovationIndex));
}
else
{
offspring.AddConnection(lessFitAgent.GetConnectionByIN(innovationIndex));
}
}
//disjoint or excess lessFitAgent gene, ignore
else
{
innovationIndex++;
continue;
}
offspring.AddNodesFromConnectionIN(innovationIndex);
innovationIndex++;
}while (innovationIndex < maxInnovationNum);
}
offspring.Mutate();
return(offspring);
}
private void DebugSingleCrossover()
{
partner1 = new NeatAgent();
partner2 = new NeatAgent();
for (int i = 0; i < 15; i++)
{
partner1.ForceMutate();
partner2.ForceMutate();
}
partner1.fitness = 10;
partner2.fitness = 11;
offspring = (NeatAgent)partner1.CrossOver(partner2);
currentAgent = partner1;
}
private void OnKeyPress(object sender, KeyReleaseEventArgs args)
{
switch (args.Event.Key)
{
case Gdk.Key.Escape:
Application.Quit();
break;
case Gdk.Key.Key_1:
currentAgent = partner1;
drawingArea.QueueDraw();
break;
case Gdk.Key.Key_2:
currentAgent = partner2;
drawingArea.QueueDraw();
break;
case Gdk.Key.Key_3:
currentAgent = offspring;
drawingArea.QueueDraw();
break;
case Gdk.Key.R:
case Gdk.Key.r:
DebugSingleCrossover();
drawingArea.QueueDraw();
break;
case Gdk.Key.space:
currentAgent.ActivateWithRandomInputs();
drawingArea.QueueDraw();
break;
default:
Here(args.Event.Key);
break;
}
}
public TopographyViewerApp() : base("TopographyViewer")
{
SetSizeRequest(720, 450);
SetPosition(WindowPosition.Center);
Resizable = false;
DeleteEvent += delegate { Application.Quit(); };
//ButtonPressEvent += ButtonPress;
//KeyPressEvent += KeyPress;
KeyReleaseEvent += OnKeyPress;
AddEvents((int)Gdk.EventMask.ButtonPressMask);
drawingArea = new DrawingArea();
drawingArea.WidthRequest = 720;
drawingArea.HeightRequest = 450;
drawingArea.ModifyBg(Gtk.StateType.Normal, new Gdk.Color(125, 125, 125));
drawingArea.ExposeEvent += OnExpose;
Add(drawingArea);
currentAgent = new NeatAgent();
ShowAll();
XorAgents();
}
private void XorAgents()
{
List <NeatAgent> population = new List <NeatAgent>();
List <NeatAgent> nextPopulation = new List <NeatAgent>();
int popSize = 300;
int gens = 10;
for (int i = 0; i < popSize; i++)
{
population.Add(new NeatAgent());
}
for (int j = 0; j < gens; j++)
{
for (int i = 0; i < population.Count; i++)
{
currentAgent = population[i];
drawingArea.QueueDraw();
double error = 0;
error += -1 - population[i].Activate(new double[] { -1, -1 })[0];
error += -1 + population[i].Activate(new double[] { 1, -1 })[0];
error += -1 + population[i].Activate(new double[] { -1, 1 })[0];
error += -1 - population[i].Activate(new double[] { -1, -1 })[0];
population[i].fitness = error;
}
population.Sort();
population.Reverse();
nextPopulation.Clear();
for (int i = 0; i < popSize; i++)
{
int mate1 = RandomInt(popSize);
int mate2 = RandomInt(popSize);
while (mate1 == mate2)
{
mate2 = RandomInt(popSize);
}
nextPopulation.Add((NeatAgent)population[mate1].CrossOver(population[mate2]));
}
population.Clear();
for (int i = 0; i < nextPopulation.Count; i++)
{
population.Add(nextPopulation[i]);
}
Here((String.Format("pop {0}", j)));
}
population.Sort();
population.Reverse();
Console.WriteLine(population[0].Activate(new double[] { -1, -1 })[0]);
Console.WriteLine(population[0].Activate(new double[] { 1, -1 })[0]);
Console.WriteLine(population[0].Activate(new double[] { -1, 1 })[0]);
Console.WriteLine(population[0].Activate(new double[] { 1, 1 })[0]);
partner1 = population[0];
partner2 = population[1];
offspring = population[2];
currentAgent = partner1;
}