//HACKS TODO
protected override void Evolve(EvaluatorBase evaluator)
{
var offspringPopulationSize = Parameters.OffspringPopulationSize;
//var stdDevsMutationTime = TimeSpan.Zero;
//var rotationsMutationTime = TimeSpan.Zero;
//var objectMutationTime = TimeSpan.Zero;
//var evaluationTime = TimeSpan.Zero;
//var stoper = new Stopwatch();
for (var i = 0; i < offspringPopulationSize; i++)
{
OffspringPopulation[i] = ParentsSelector.Select(BasePopulation);
if (Parameters.TrackEvolutionSteps)
{
CurrentMutation = new MutationStep(ParentsSelector.LastSelectedParentIndex, OffspringPopulation[i]);
}
//stoper.Restart();
OffspringPopulation[i] = StdDeviationsMutator.Mutate(OffspringPopulation[i]);
//stoper.Stop();
//stdDevsMutationTime += stoper.Elapsed;
//stoper.Restart();
OffspringPopulation[i] = RotationsMutator.Mutate(OffspringPopulation[i]);
//stoper.Stop();
//rotationsMutationTime += stoper.Elapsed;
//stoper.Restart();
OffspringPopulation[i] = ObjectMutator.Mutate(OffspringPopulation[i]);
//stoper.Stop();
//objectMutationTime += stoper.Elapsed;
//stoper.Restart();
OffspringPopulation[i].FitnessScore = evaluator.Evaluate(OffspringPopulation[i]);
//stoper.Stop();
//evaluationTime += stoper.Elapsed;
if (Parameters.TrackEvolutionSteps)
{
CurrentMutation.Offspring = OffspringPopulation[i].DeepCopyByExpressionTree();
CurrentEvolutionStep.Mutations.Add(CurrentMutation);
}
}
//stoper.Restart();
BasePopulation = SurvivorsSelector.Select(BasePopulation, OffspringPopulation);
//stoper.Stop();
//Statistics.MeanSurvivorsSelectionTime += stoper.Elapsed;
//Statistics.MeanStdDevsMutationTime += TimeSpan.FromTicks(stdDevsMutationTime.Ticks / offspringPopulationSize);
//Statistics.MeanRotationsMutationTime += TimeSpan.FromTicks(rotationsMutationTime.Ticks / offspringPopulationSize);
//Statistics.MeanObjectMutationTime += TimeSpan.FromTicks(objectMutationTime.Ticks / offspringPopulationSize);
//Statistics.MeanEvaluationTime += TimeSpan.FromTicks(evaluationTime.Ticks / offspringPopulationSize);
if (Parameters.TrackEvolutionSteps)
{
CurrentEvolutionStep.NewPopulation = BasePopulation.DeepCopyByExpressionTree();
}
}
