protected override void EvaluateTour(VRPEvaluation eval, IVRPProblemInstance instance, Tour tour, IVRPEncoding solution) {
TourInsertionInfo tourInfo = new TourInsertionInfo(solution.GetVehicleAssignment(solution.GetTourIndex(tour))); ;
eval.InsertionInfo.AddTourInsertionInfo(tourInfo);
double originalQuality = eval.Quality;
IHomogenousCapacitatedProblemInstance cvrpInstance = instance as IHomogenousCapacitatedProblemInstance;
DoubleArray demand = instance.Demand;
double delivered = 0.0;
double overweight = 0.0;
double distance = 0.0;
double capacity = cvrpInstance.Capacity.Value;
for (int i = 0; i <= tour.Stops.Count; i++) {
int end = 0;
if (i < tour.Stops.Count)
end = tour.Stops[i];
delivered += demand[end];
}
double spareCapacity = capacity - delivered;
//simulate a tour, start and end at depot
for (int i = 0; i <= tour.Stops.Count; i++) {
int start = 0;
if (i > 0)
start = tour.Stops[i - 1];
int end = 0;
if (i < tour.Stops.Count)
end = tour.Stops[i];
//drive there
double currentDistace = instance.GetDistance(start, end, solution);
distance += currentDistace;
CVRPInsertionInfo stopInfo = new CVRPInsertionInfo(start, end, spareCapacity);
tourInfo.AddStopInsertionInfo(stopInfo);
}
eval.Quality += instance.FleetUsageFactor.Value;
eval.Quality += instance.DistanceFactor.Value * distance;
eval.Distance += distance;
eval.VehicleUtilization += 1;
if (delivered > capacity) {
overweight = delivered - capacity;
}
(eval as CVRPEvaluation).Overload += overweight;
double penalty = overweight * cvrpInstance.OverloadPenalty.Value;
eval.Penalty += penalty;
eval.Quality += penalty;
tourInfo.Penalty = penalty;
tourInfo.Quality = eval.Quality - originalQuality;
}
protected override void EvaluateTour(VRPEvaluation eval, IVRPProblemInstance instance, Tour tour, IVRPEncoding solution)
{
TourInsertionInfo tourInfo = new TourInsertionInfo(solution.GetVehicleAssignment(solution.GetTourIndex(tour)));
eval.InsertionInfo.AddTourInsertionInfo(tourInfo);
double originalQuality = eval.Quality;
IHeterogenousCapacitatedProblemInstance cvrpInstance = instance as IHeterogenousCapacitatedProblemInstance;
double delivered = 0.0;
double overweight = 0.0;
double distance = 0.0;
int tourIndex = solution.GetTourIndex(tour);
int vehicle = solution.GetVehicleAssignment(tourIndex);
double capacity = cvrpInstance.Capacity[vehicle];
for (int i = 0; i < tour.Stops.Count; i++)
{
delivered += instance.GetDemand(tour.Stops[i]);
}
double spareCapacity = capacity - delivered;
//simulate a tour, start and end at depot
for (int i = 0; i <= tour.Stops.Count; i++)
{
int start = 0;
if (i > 0)
{
start = tour.Stops[i - 1];
}
int end = 0;
if (i < tour.Stops.Count)
{
end = tour.Stops[i];
}
//drive there
double currentDistace = instance.GetDistance(start, end, solution);
distance += currentDistace;
CVRPInsertionInfo stopInfo = new CVRPInsertionInfo(start, end, spareCapacity);
tourInfo.AddStopInsertionInfo(stopInfo);
}
eval.Quality += instance.FleetUsageFactor.Value;
eval.Quality += instance.DistanceFactor.Value * distance;
eval.Distance += distance;
eval.VehicleUtilization += 1;
if (delivered > capacity)
{
overweight = delivered - capacity;
}
(eval as CVRPEvaluation).Overload += overweight;
double penalty = overweight * cvrpInstance.OverloadPenalty.Value;
eval.Penalty += penalty;
eval.Quality += penalty;
tourInfo.Penalty = penalty;
tourInfo.Quality = eval.Quality - originalQuality;
}
