public override IOperation Apply() { ItemList <IItem> tabuList = TabuListParameter.ActualValue; double moveQuality = MoveQualityParameter.ActualValue.Value; bool useAspiration = UseAspirationCriterion.Value; bool isTabu = false; PotvinPDRearrangeMove move = PDRearrangeMoveParameter.ActualValue; foreach (IItem tabuMove in tabuList) { PotvinPDRelocateMoveAttribute attribute = tabuMove as PotvinPDRelocateMoveAttribute; if (attribute != null) { double distance = 0; if (MoveDistanceParameter.ActualValue != null) { distance = MoveDistanceParameter.ActualValue.Value; } double overload = 0; if (MoveOverloadParameter.ActualValue != null) { overload = MoveOverloadParameter.ActualValue.Value; } double tardiness = 0; if (MoveTardinessParameter.ActualValue != null) { tardiness = MoveTardinessParameter.ActualValue.Value; } IVRPProblemInstance instance = ProblemInstanceParameter.ActualValue; double quality = attribute.Distance * instance.DistanceFactor.Value; IHomogenousCapacitatedProblemInstance cvrp = instance as IHomogenousCapacitatedProblemInstance; if (cvrp != null) { quality += attribute.Overload * cvrp.OverloadPenalty.Value; } ITimeWindowedProblemInstance vrptw = instance as ITimeWindowedProblemInstance; if (vrptw != null) { quality += attribute.Tardiness * vrptw.TardinessPenalty.Value; } IPickupAndDeliveryProblemInstance pdp = instance as IPickupAndDeliveryProblemInstance; if (pdp != null) { quality += attribute.PickupViolations * pdp.PickupViolationPenalty.Value; } if (!useAspiration || moveQuality >= quality) { if (attribute.City == move.City && attribute.Tour == move.Tour) { isTabu = true; break; } if (attribute.Distance == distance && attribute.Overload == overload && attribute.Tardiness == tardiness) { isTabu = true; break; } } } } MoveTabuParameter.ActualValue = new BoolValue(isTabu); return(base.Apply()); }
public override IOperation Apply() { ItemList <IItem> tabuList = TabuListParameter.ActualValue; double moveQuality = MoveQualityParameter.ActualValue.Value; bool useAspiration = UseAspirationCriterion.Value; bool isTabu = false; PotvinTwoOptStarMove move = TwoOptStarMoveParameter.ActualValue; List <int> segmentX1; List <int> segmentX2; PotvinTwoOptStarMoveMaker.GetSegments(move, out segmentX1, out segmentX2); foreach (IItem tabuMove in tabuList) { PotvinTwoOptStarMoveAttribute attribute = tabuMove as PotvinTwoOptStarMoveAttribute; if (attribute != null) { double distance = 0; if (MoveDistanceParameter.ActualValue != null) { distance = MoveDistanceParameter.ActualValue.Value; } double overload = 0; if (MoveOverloadParameter.ActualValue != null) { overload = MoveOverloadParameter.ActualValue.Value; } double tardiness = 0; if (MoveTardinessParameter.ActualValue != null) { tardiness = MoveTardinessParameter.ActualValue.Value; } IVRPProblemInstance instance = ProblemInstanceParameter.ActualValue; double quality = attribute.Distance * instance.DistanceFactor.Value; IHomogenousCapacitatedProblemInstance cvrp = instance as IHomogenousCapacitatedProblemInstance; if (cvrp != null) { quality += attribute.Overload * cvrp.OverloadPenalty.Value; } ITimeWindowedProblemInstance vrptw = instance as ITimeWindowedProblemInstance; if (vrptw != null) { quality += attribute.Tardiness * vrptw.TardinessPenalty.Value; } if (!useAspiration || moveQuality >= quality) { if (attribute.Tour == move.Tour1 && segmentX2.Contains(attribute.City) || attribute.Tour == move.Tour2 && segmentX1.Contains(attribute.City)) { isTabu = true; break; } if (attribute.Distance == distance && attribute.Overload == overload && attribute.Tardiness == tardiness) { isTabu = true; break; } } } } MoveTabuParameter.ActualValue = new BoolValue(isTabu); return(base.Apply()); }
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; ITimeWindowedProblemInstance vrptw = instance as ITimeWindowedProblemInstance; DoubleArray dueTime = vrptw.DueTime; DoubleArray readyTime = vrptw.ReadyTime; DoubleArray serviceTimes = vrptw.ServiceTime; double time = 0.0; double waitingTime = 0.0; double serviceTime = 0.0; double tardiness = 0.0; 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; double tourStartTime = readyTime[0]; time = tourStartTime; //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 = vrptw.GetDistance(start, end, solution); time += currentDistace; distance += currentDistace; double arrivalTime = time; //check if it was serviced on time if (time > dueTime[end]) { tardiness += time - dueTime[end]; } //wait double currentWaitingTime = 0.0; if (time < readyTime[end]) { currentWaitingTime = readyTime[end] - time; } double waitTime = readyTime[end] - time; waitingTime += currentWaitingTime; time += currentWaitingTime; double spareTime = dueTime[end] - time; //service double currentServiceTime = serviceTimes[end]; serviceTime += currentServiceTime; time += currentServiceTime; CVRPTWInsertionInfo stopInfo = new CVRPTWInsertionInfo(start, end, spareCapacity, tourStartTime, arrivalTime, time, spareTime, waitTime); 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 tourPenalty = 0; double penalty = overweight * cvrpInstance.OverloadPenalty.Value; eval.Penalty += penalty; eval.Quality += penalty; tourPenalty += penalty; (eval as CVRPTWEvaluation).Tardiness += tardiness; (eval as CVRPTWEvaluation).TravelTime += time; penalty = tardiness * vrptw.TardinessPenalty.Value; eval.Penalty += penalty; eval.Quality += penalty; tourPenalty += penalty; eval.Quality += time * vrptw.TimeFactor.Value; tourInfo.Penalty = tourPenalty; 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; IHomogenousCapacitatedProblemInstance cvrpInstance = instance as IHomogenousCapacitatedProblemInstance; DoubleArray demand = instance.Demand; ITimeWindowedProblemInstance vrptw = instance as ITimeWindowedProblemInstance; DoubleArray dueTime = vrptw.DueTime; DoubleArray readyTime = vrptw.ReadyTime; DoubleArray serviceTimes = vrptw.ServiceTime; IPickupAndDeliveryProblemInstance pdp = instance as IPickupAndDeliveryProblemInstance; IntArray pickupDeliveryLocation = pdp.PickupDeliveryLocation; double capacity = cvrpInstance.Capacity.Value; double time = 0.0; double waitingTime = 0.0; double serviceTime = 0.0; double tardiness = 0.0; double overweight = 0.0; double distance = 0.0; double currentLoad = 0.0; Dictionary <int, bool> stops = new Dictionary <int, bool>(); int pickupViolations = 0; double tourStartTime = readyTime[0]; time = tourStartTime; //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 = vrptw.GetDistance(start, end, solution); time += currentDistace; distance += currentDistace; double arrivalTime = time; //check if it was serviced on time if (time > dueTime[end]) { tardiness += time - dueTime[end]; } //wait double currentWaitingTime = 0.0; if (time < readyTime[end]) { currentWaitingTime = readyTime[end] - time; } double waitTime = readyTime[end] - time; waitingTime += currentWaitingTime; time += currentWaitingTime; double spareTime = dueTime[end] - time; //service double currentServiceTime = serviceTimes[end]; serviceTime += currentServiceTime; time += currentServiceTime; //Pickup / deliver double arrivalSpareCapacity = capacity - currentLoad; bool validPickupDelivery = validPickupDelivery = ((demand[end] >= 0) || (stops.ContainsKey(pickupDeliveryLocation[end]))); if (validPickupDelivery) { currentLoad += demand[end]; } else { pickupViolations++; } if (currentLoad > capacity) { overweight += currentLoad - capacity; } double spareCapacity = capacity - currentLoad; CVRPPDTWInsertionInfo stopInfo = new CVRPPDTWInsertionInfo(start, end, spareCapacity, tourStartTime, arrivalTime, time, spareTime, waitTime, new List <int>(stops.Keys), arrivalSpareCapacity); tourInfo.AddStopInsertionInfo(stopInfo); stops.Add(end, true); } eval.Quality += instance.FleetUsageFactor.Value; eval.Quality += instance.DistanceFactor.Value * distance; eval.Distance += distance; eval.VehicleUtilization += 1; (eval as CVRPEvaluation).Overload += overweight; double tourPenalty = 0; double penalty = overweight * cvrpInstance.OverloadPenalty.Value; eval.Penalty += penalty; eval.Quality += penalty; tourPenalty += penalty; (eval as CVRPTWEvaluation).Tardiness += tardiness; (eval as CVRPTWEvaluation).TravelTime += time; penalty = tardiness * vrptw.TardinessPenalty.Value; eval.Penalty += penalty; eval.Quality += penalty; tourPenalty += penalty; (eval as CVRPPDTWEvaluation).PickupViolations += pickupViolations; penalty = pickupViolations * pdp.PickupViolationPenalty.Value; eval.Penalty += penalty; tourPenalty += penalty; eval.Quality += penalty; eval.Quality += time * vrptw.TimeFactor.Value; tourInfo.Penalty = tourPenalty; 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; 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; }