private void Mutate(IGenome genome, double soften = 1)
{
if (new Random().NextDouble() < GenerationParameters.MutateAddNodeProbability / Math.Max(soften, 1))
{
genome.MutateAddNode();
}
else if (new Random().NextDouble() < GenerationParameters.MutateAddGeneProbability / Math.Max(soften, 1))
{
genome.MutateAddGene(Population.Genomes.SelectMany(g => g.Genes));
}
else
{
if (new Random().NextDouble() < GenerationParameters.MutateAllGeneWeightsProbability)
{
genome.MutateGeneWeights(GeneMutationType.AdjustWeight, GeneParameters.MutateGeneWeightFactor, 1);
}
if (new Random().NextDouble() < GenerationParameters.MutateGeneExpressionProbability)
{
genome.MutateGeneExpression();
}
if (new Random().NextDouble() < GenerationParameters.MutateGeneReExpressionProbability)
{
genome.MutateGeneReExpress();
}
IGene geneCandidate = genome.Genes[new Random().Next(genome.Genes.Count)];
if (new Random().NextDouble() < GenerationParameters.MutateGeneWeightProbability)
{
geneCandidate.MutateWeight(GeneMutationType.AdjustWeight, GeneParameters.MutateGeneWeightFactor);
}
}
}
public void BreedTest()
{
IGenome mate = genome.Copy();
mate.MutateAddNode();
mate.MutateAddGene(genome.Genes);
genome.MutateAddNode();
IGenome offspring = genome.Breed(mate);
string parentGenes = string.Join("->", genome.Genes.Select(g => "A" + g.Innovation).ToList());
string mateGenes = string.Join("->", mate.Genes.Select(g => "B" + g.Innovation).ToList());
string offspringGenes = string.Join("->", offspring.Genes.OrderBy(g => g.Innovation).Select(g => "C" + g.Innovation).ToList());
string dotGraph = "digraph G { " +
" subgraph cluster_0 { " +
" style = filled; " +
" color = lightgrey; " +
" node[style = filled, color = white]; " +
" " + parentGenes + "; " +
" label = \"Parent\"; " +
" } " +
" subgraph cluster_1 { " +
" style = filled; " +
" color = lightgrey; " +
" node[style = filled, color = white]; " +
" " + mateGenes + "; " +
" label = \"Mate\"; } " +
" subgraph cluster_2 { " +
" style = filled; " +
" color = lightblue; " +
" node[style = filled, color = white]; " +
" " + offspringGenes + "; " +
" label = \"Offspring\"; " +
" }";
genome.Genes.ForEach(g =>
{
dotGraph += string.Format("\"{0}\" [ label=\"{1} {2} {3}\" shape = \"square\" ]", "A" + g.Innovation, g.Innovation, g.NodeOut.Id.ToString().Substring(32) + "->" + g.NodeIn.Id.ToString().Substring(32), Math.Round(g.Weight, 2)) + ";";
});
mate.Genes.ForEach(g =>
{
dotGraph += string.Format("\"{0}\" [ label=\"{1} {2} {3}\" shape = \"square\" ]", "B" + g.Innovation, g.Innovation, g.NodeOut.Id.ToString().Substring(32) + "->" + g.NodeIn.Id.ToString().Substring(32), Math.Round(g.Weight, 2)) + ";";
});
offspring.Genes.ForEach(g =>
{
dotGraph += string.Format("\"{0}\" [ label=\"{1} {2} {3}\" shape = \"square\" ]", "C" + g.Innovation, g.Innovation, g.NodeOut.Id.ToString().Substring(32) + "->" + g.NodeIn.Id.ToString().Substring(32), Math.Round(g.Weight, 2)) + ";";
});
dotGraph += " rankdir=LR; }";
Debug.WriteLine(dotGraph);
}