/// <summary>
/// Liefert den Wert der heuristischen Funktion für den übergebenen Knoten.
/// </summary>
/// <param name="node">Der Knoten, dessen Heuristik ermittelt werden soll.</param>
/// <param name="searchProblem">Das Problem, dass es zu lösen gilt.</param>
/// <param name="searchMethod">Die Suchmethode, die gerade abläuft.</param>
/// <returns>Gibt den Wert der Heuristik zurück.</returns>
public double GetHeuristicValue(OKSearchRoom.INode node, IHeuristicSearchProblem searchProblem, ISearchMethod searchMethod)
{
double result = 0;
if (searchProblem is ConstraintOptimizationProblem)
{
ConstraintConfiguration configuration = (ConstraintConfiguration)node.Data;
ConstraintOptimizationProblem optProblem = searchProblem as ConstraintOptimizationProblem;
if (optProblem.SolutionList.Count == 0)
{
return(configuration.GetCountDomainValues());
}
else
{
OptimizationConstraint optConstraint = optProblem.GetObjectiveFunction();
optConstraint.SetCurrentConfiguration(configuration);
IOperation operation = optConstraint.ObjectiveFunction;
if (operation.DoOperation(out result) != true)
{
return(-double.MaxValue);
}
else
{
//return configuration.GetCountDomainValues();
if (operation.GetType() == typeof(Minimum))
{
return(result + configuration.GetCountDomainValues());
}
//return configuration.GetCountDomainValues();
//return (configuration.GetCountDomainValues()+result);
//return (result + configuration.GetCountDomainValues());
//return (result + _objectiveConstraint.ObjectiveValue * configuration.GetCountDomainValues());
//return configuration.GetCountDomainValues();
//return -(_objectiveConstraint.ObjectiveValue - result) + configuration.GetCountDomainValues() * result;
//return -(_objectiveConstraint.ObjectiveValue - result) + configuration.GetCountDomainValues() * _objectiveConstraint.ObjectiveValue;
//return -node.Depth * (_objectiveConstraint.ObjectiveValue - result);
//return result - _objectiveConstraint.ObjectiveValue;
//return -node.Depth * (result - _objectiveConstraint.ObjectiveValue);
else
{
//return node.Depth * (_objectiveConstraint.ObjectiveValue - result);
return(configuration.GetCountDomainValues() - result);
}
}
}
}
return(result);
}
/// <summary>
/// Legt das ZielfunktionsConstraint fest.
/// </summary>
/// <param name="objectiveConstraint"></param>
public void SetObjectiveFunction(OptimizationConstraint objectiveConstraint)
{
_objectiveConstraint = objectiveConstraint;
}
