public override IOperation Apply()
{
var qualities = QualitiesParameter.ActualValue;
var testFunction = TestFunctionParameter.ActualValue;
int objectives = qualities[0].Length;
var referencePoint = ReferencePointParameter.ActualValue;
double best = BestKnownHypervolumeResultParameter.ActualValue.Value;
if (referencePoint.SequenceEqual(testFunction.ReferencePoint(objectives)))
{
best = Math.Max(best, testFunction.OptimalHypervolume(objectives));
}
IEnumerable <double[]> front = NonDominatedSelect.SelectNonDominatedVectors(qualities.Select(q => q.ToArray()), testFunction.Maximization(objectives), true);
double hv = Hypervolume.Calculate(front, referencePoint.ToArray(), testFunction.Maximization(objectives));
if (hv > best)
{
best = hv;
}
HypervolumeResultParameter.ActualValue.Value = hv;
BestKnownHypervolumeResultParameter.ActualValue.Value = best;
HypervolumeDistanceResultParameter.ActualValue.Value = best - hv;
return(base.Apply());
}
protected override double GetBestKnownHypervolume(int objectives)
{
return(Hypervolume.Calculate(GetOptimalParetoFront(objectives), GetReferencePoint(objectives), GetMaximization(objectives)));
}