#region License Information /* HeuristicLab * Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL) * * This file is part of HeuristicLab. * * HeuristicLab is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * HeuristicLab is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with HeuristicLab. If not, see . */ #endregion using HeuristicLab.Core; using HeuristicLab.Data; using HeuristicLab.Operators; using HeuristicLab.Optimization; using HeuristicLab.Parameters; using HeuristicLab.Persistence.Default.CompositeSerializers.Storable; using HeuristicLab.Common; using HeuristicLab.Problems.VehicleRouting.ProblemInstances; using HeuristicLab.Problems.VehicleRouting.Interfaces; using HeuristicLab.Problems.VehicleRouting.Variants; namespace HeuristicLab.Problems.VehicleRouting.Encodings.Potvin { [Item("PotvinPDExchangeMoveMaker", "Peforms the exchange move on a given PDP encoding and updates the quality.")] [StorableClass] public class PotvinPDExchangeMoveMaker : PotvinMoveMaker, IPotvinPDExchangeMoveOperator, IMoveMaker { public ILookupParameter PDExchangeMoveParameter { get { return (ILookupParameter)Parameters["PotvinPDExchangeMove"]; } } public override ILookupParameter VRPMoveParameter { get { return PDExchangeMoveParameter; } } [StorableConstructor] private PotvinPDExchangeMoveMaker(bool deserializing) : base(deserializing) { } public PotvinPDExchangeMoveMaker() : base() { Parameters.Add(new LookupParameter("PotvinPDExchangeMove", "The moves that should be made.")); } public override IDeepCloneable Clone(Cloner cloner) { return new PotvinPDExchangeMoveMaker(this, cloner); } protected PotvinPDExchangeMoveMaker(PotvinPDExchangeMoveMaker original, Cloner cloner) : base(original, cloner) { } public static void Apply(PotvinEncoding solution, PotvinPDExchangeMove move, IVRPProblemInstance problemInstance) { if (move.Tour >= solution.Tours.Count) solution.Tours.Add(new Tour()); Tour tour = solution.Tours[move.Tour]; Tour oldTour = solution.Tours.Find(t => t.Stops.Contains(move.City)); oldTour.Stops.Remove(move.City); if (problemInstance is IPickupAndDeliveryProblemInstance) { IPickupAndDeliveryProblemInstance pdp = problemInstance as IPickupAndDeliveryProblemInstance; int location = pdp.GetPickupDeliveryLocation(move.City); Tour oldTour2 = solution.Tours.Find(t => t.Stops.Contains(location)); oldTour2.Stops.Remove(location); location = pdp.GetPickupDeliveryLocation(move.Replaced); oldTour2 = solution.Tours.Find(t => t.Stops.Contains(location)); oldTour2.Stops.Remove(location); tour.Stops.Remove(move.Replaced); PotvinPDRearrangeMoveMaker.InsertPair(solution, tour, move.City, pdp.GetPickupDeliveryLocation(move.City), problemInstance); PotvinPDRearrangeMoveMaker.InsertPair(solution, oldTour, move.Replaced, pdp.GetPickupDeliveryLocation(move.Replaced), problemInstance); } else { tour.Stops.Remove(move.Replaced); int place = solution.FindBestInsertionPlace(tour, move.City); tour.Stops.Insert(place, move.City); place = solution.FindBestInsertionPlace(oldTour, move.Replaced); oldTour.Stops.Insert(place, move.Replaced); } } protected override void PerformMove() { PotvinPDExchangeMove move = PDExchangeMoveParameter.ActualValue; PotvinEncoding newSolution = move.Individual.Clone() as PotvinEncoding; Apply(newSolution, move, ProblemInstance); VRPToursParameter.ActualValue = newSolution; //reset move quality VRPEvaluation eval = ProblemInstance.Evaluate(newSolution); MoveQualityParameter.ActualValue.Value = eval.Quality; } } }