#region License Information /* HeuristicLab * Copyright (C) 2002-2015 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.Common; using HeuristicLab.Core; using HeuristicLab.Data; using HeuristicLab.Optimization; using HeuristicLab.Parameters; using HeuristicLab.Persistence.Default.CompositeSerializers.Storable; using HeuristicLab.Problems.VehicleRouting.Interfaces; using HeuristicLab.Problems.VehicleRouting.ProblemInstances; namespace HeuristicLab.Problems.VehicleRouting.Encodings.Potvin { [Item("PotvinCustomerRelocationMoveMaker", "Peforms the customer relocation move on a given VRP encoding and updates the quality.")] [StorableClass] public class PotvinCustomerRelocationMoveMaker : PotvinMoveMaker, IPotvinCustomerRelocationMoveOperator, IMoveMaker { public ILookupParameter CustomerRelocationMoveParameter { get { return (ILookupParameter)Parameters["PotvinCustomerRelocationMove"]; } } public override ILookupParameter VRPMoveParameter { get { return CustomerRelocationMoveParameter; } } public ILookupParameter MemoriesParameter { get { return (ILookupParameter)Parameters["Memories"]; } } public IValueParameter AdditionFrequencyMemoryKeyParameter { get { return (IValueParameter)Parameters["AdditionFrequencyMemoryKey"]; } } [StorableConstructor] protected PotvinCustomerRelocationMoveMaker(bool deserializing) : base(deserializing) { } public PotvinCustomerRelocationMoveMaker() : base() { Parameters.Add(new LookupParameter("PotvinCustomerRelocationMove", "The moves that should be made.")); Parameters.Add(new LookupParameter("Memories", "The TS memory collection.")); Parameters.Add(new ValueParameter("AdditionFrequencyMemoryKey", "The key that is used for the addition frequency in the TS memory.", new StringValue("AdditionFrequency"))); } public override IDeepCloneable Clone(Cloner cloner) { return new PotvinCustomerRelocationMoveMaker(this, cloner); } protected PotvinCustomerRelocationMoveMaker(PotvinCustomerRelocationMoveMaker original, Cloner cloner) : base(original, cloner) { } public static void Apply(PotvinEncoding solution, PotvinCustomerRelocationMove 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 (oldTour.Stops.Count == 0) solution.Tours.Remove(oldTour);*/ int place = solution.FindBestInsertionPlace(tour, move.City); tour.Stops.Insert(place, move.City); solution.Repair(); } protected override void PerformMove() { PotvinCustomerRelocationMove move = CustomerRelocationMoveParameter.ActualValue; PotvinEncoding newSolution = move.Individual.Clone() as PotvinEncoding; Apply(newSolution, move, ProblemInstance); newSolution.Repair(); VRPToursParameter.ActualValue = newSolution; //reset move quality VRPEvaluation eval = ProblemInstance.Evaluate(newSolution); MoveQualityParameter.ActualValue.Value = eval.Quality; //update memory VariableCollection memory = MemoriesParameter.ActualValue; string key = AdditionFrequencyMemoryKeyParameter.Value.Value; if (memory != null) { if (!memory.ContainsKey(key)) { memory.Add(new Variable(key, new ItemDictionary())); } ItemDictionary additionFrequency = memory[key].Value as ItemDictionary; PotvinCustomerRelocationMoveAttribute attr = new PotvinCustomerRelocationMoveAttribute(0, move.Tour, move.City); if (!additionFrequency.ContainsKey(attr)) additionFrequency[attr] = new IntValue(0); additionFrequency[attr].Value++; } } } }