public VRPProblemInstance()
: base()
{
Parameters.Add(new ValueParameter <DoubleMatrix>("Coordinates", "The x- and y-Coordinates of the cities.", new DoubleMatrix()));
Parameters.Add(new OptionalValueParameter <DoubleMatrix>("DistanceMatrix", "The matrix which contains the distances between the cities."));
Parameters.Add(new ValueParameter <BoolValue>("UseDistanceMatrix", "True if a distance matrix should be calculated and used for evaluation, otherwise false.", new BoolValue(true)));
Parameters.Add(new ValueParameter <IntValue>("Vehicles", "The number of vehicles.", new IntValue(0)));
Parameters.Add(new ValueParameter <DoubleArray>("Demand", "The demand of each customer.", new DoubleArray()));
Parameters.Add(new ValueParameter <DoubleValue>("EvalFleetUsageFactor", "The fleet usage factor considered in the evaluation.", new DoubleValue(0)));
Parameters.Add(new ValueParameter <DoubleValue>("EvalDistanceFactor", "The distance factor considered in the evaluation.", new DoubleValue(1)));
evaluator = Evaluator;
AttachEventHandlers();
}
//helper method to evaluate an updated individual
protected void UpdateEvaluation(IVRPEncoding updatedTours)
{
IVRPEvaluator evaluator = ProblemInstance.MoveEvaluator;
try {
this.ExecutionContext.Scope.Variables.Add(new Variable(evaluator.VRPToursParameter.ActualName,
updatedTours));
IAtomicOperation op = this.ExecutionContext.CreateChildOperation(evaluator);
op.Operator.Execute((IExecutionContext)op, CancellationToken);
}
finally {
this.ExecutionContext.Scope.Variables.Remove(evaluator.VRPToursParameter.ActualName);
}
}
private void UpdateMoveEvaluation()
{
IVRPEvaluator evaluator = ProblemInstance.SolutionEvaluator;
ICollection <IParameter> addedParameters = new List <IParameter>();
try {
foreach (IParameter parameter in evaluator.Parameters)
{
if (parameter is ILookupParameter &&
parameter != evaluator.VRPToursParameter &&
parameter != evaluator.ProblemInstanceParameter)
{
ILookupParameter evaluatorParameter = parameter as ILookupParameter;
string resultName = evaluatorParameter.ActualName;
if (!this.Parameters.ContainsKey(resultName))
{
ILookupParameter resultParameter = new LookupParameter <IItem>(resultName);
resultParameter.ExecutionContext = ExecutionContext;
this.Parameters.Add(resultParameter);
addedParameters.Add(resultParameter);
}
string moveResultName = VRPMoveEvaluator.MovePrefix + resultName;
if (!this.Parameters.ContainsKey(moveResultName))
{
ILookupParameter moveResultParameter = new LookupParameter <IItem>(moveResultName);
moveResultParameter.ExecutionContext = ExecutionContext;
this.Parameters.Add(moveResultParameter);
addedParameters.Add(moveResultParameter);
}
ILookupParameter result = Parameters[resultName] as ILookupParameter;
ILookupParameter moveResult = Parameters[moveResultName] as ILookupParameter;
result.ActualValue = moveResult.ActualValue;
}
}
} finally {
foreach (IParameter parameter in addedParameters)
{
this.Parameters.Remove(parameter);
}
}
}
private void AfterDeserialization()
{
evaluator = Evaluator;
AttachEventHandlers();
}
protected VRPProblemInstance(VRPProblemInstance original, Cloner cloner)
: base(original, cloner)
{
evaluator = Evaluator;
AttachEventHandlers();
}
private void AfterDeserialization() {
evaluator = Evaluator;
AttachEventHandlers();
}
protected VRPProblemInstance(VRPProblemInstance original, Cloner cloner)
: base(original, cloner) {
evaluator = Evaluator;
AttachEventHandlers();
}
public VRPProblemInstance()
: base() {
Parameters.Add(new ValueParameter<DoubleMatrix>("Coordinates", "The x- and y-Coordinates of the cities.", new DoubleMatrix()));
Parameters.Add(new OptionalValueParameter<DoubleMatrix>("DistanceMatrix", "The matrix which contains the distances between the cities."));
Parameters.Add(new ValueParameter<BoolValue>("UseDistanceMatrix", "True if a distance matrix should be calculated and used for evaluation, otherwise false.", new BoolValue(true)));
Parameters.Add(new ValueParameter<IntValue>("Vehicles", "The number of vehicles.", new IntValue(0)));
Parameters.Add(new ValueParameter<DoubleArray>("Demand", "The demand of each customer.", new DoubleArray()));
Parameters.Add(new ValueParameter<DoubleValue>("EvalFleetUsageFactor", "The fleet usage factor considered in the evaluation.", new DoubleValue(0)));
Parameters.Add(new ValueParameter<DoubleValue>("EvalDistanceFactor", "The distance factor considered in the evaluation.", new DoubleValue(1)));
evaluator = Evaluator;
AttachEventHandlers();
}
