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source: stable/HeuristicLab.Problems.VehicleRouting/3.4/Encodings/Potvin/Moves/TwoOptStar/PotvinTwoOptStarMoveTabuCriterion.cs @ 15584

Last change on this file since 15584 was 15584, checked in by swagner, 6 years ago

#2640: Updated year of copyrights in license headers on stable

File size: 7.6 KB
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1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2018 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System.Collections.Generic;
23using HeuristicLab.Common;
24using HeuristicLab.Core;
25using HeuristicLab.Data;
26using HeuristicLab.Operators;
27using HeuristicLab.Optimization;
28using HeuristicLab.Parameters;
29using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
30using HeuristicLab.Problems.VehicleRouting.Interfaces;
31using HeuristicLab.Problems.VehicleRouting.Variants;
32
33namespace HeuristicLab.Problems.VehicleRouting.Encodings.Potvin {
34  [Item("PotvinTwoOptStarTabuCriterion", @"Checks if a certain two opt star move is tabu.")]
35  [StorableClass]
36  public class PotvinTwoOptStarMoveTabuCriterion : SingleSuccessorOperator, IPotvinTwoOptStarMoveOperator, ITabuChecker, IPotvinOperator, IVRPMoveOperator {
37    public override bool CanChangeName {
38      get { return false; }
39    }
40
41    public ILookupParameter<PotvinTwoOptStarMove> TwoOptStarMoveParameter {
42      get { return (ILookupParameter<PotvinTwoOptStarMove>)Parameters["PotvinTwoOptStarMove"]; }
43    }
44    public ILookupParameter VRPMoveParameter {
45      get { return TwoOptStarMoveParameter; }
46    }
47    public ILookupParameter<IVRPEncoding> VRPToursParameter {
48      get { return (ILookupParameter<IVRPEncoding>)Parameters["VRPTours"]; }
49    }
50    public ILookupParameter<IVRPProblemInstance> ProblemInstanceParameter {
51      get { return (LookupParameter<IVRPProblemInstance>)Parameters["ProblemInstance"]; }
52    }
53
54    public ILookupParameter<ItemList<IItem>> TabuListParameter {
55      get { return (ILookupParameter<ItemList<IItem>>)Parameters["TabuList"]; }
56    }
57    public ILookupParameter<BoolValue> MoveTabuParameter {
58      get { return (ILookupParameter<BoolValue>)Parameters["MoveTabu"]; }
59    }
60    public IValueLookupParameter<BoolValue> MaximizationParameter {
61      get { return (IValueLookupParameter<BoolValue>)Parameters["Maximization"]; }
62    }
63    public ILookupParameter<DoubleValue> MoveQualityParameter {
64      get { return (ILookupParameter<DoubleValue>)Parameters["MoveQuality"]; }
65    }
66    public ValueParameter<BoolValue> UseAspirationCriterionParameter {
67      get { return (ValueParameter<BoolValue>)Parameters["UseAspirationCriterion"]; }
68    }
69
70    public ILookupParameter<DoubleValue> MoveDistanceParameter {
71      get { return (ILookupParameter<DoubleValue>)Parameters["MoveDistance"]; }
72    }
73    public ILookupParameter<DoubleValue> MoveOverloadParameter {
74      get { return (ILookupParameter<DoubleValue>)Parameters["MoveOverload"]; }
75    }
76    public ILookupParameter<DoubleValue> MoveTardinessParameter {
77      get { return (ILookupParameter<DoubleValue>)Parameters["MoveTardiness"]; }
78    }
79
80    public BoolValue UseAspirationCriterion {
81      get { return UseAspirationCriterionParameter.Value; }
82      set { UseAspirationCriterionParameter.Value = value; }
83    }
84
85    [StorableConstructor]
86    protected PotvinTwoOptStarMoveTabuCriterion(bool deserializing) : base(deserializing) { }
87    protected PotvinTwoOptStarMoveTabuCriterion(PotvinTwoOptStarMoveTabuCriterion original, Cloner cloner) : base(original, cloner) { }
88    public PotvinTwoOptStarMoveTabuCriterion()
89      : base() {
90      Parameters.Add(new LookupParameter<PotvinTwoOptStarMove>("PotvinTwoOptStarMove", "The moves that should be made."));
91      Parameters.Add(new LookupParameter<IVRPEncoding>("VRPTours", "The VRP tours considered in the move."));
92      Parameters.Add(new LookupParameter<IVRPProblemInstance>("ProblemInstance", "The VRP problem instance"));
93
94      Parameters.Add(new LookupParameter<BoolValue>("MoveTabu", "The variable to store if a move was tabu."));
95      Parameters.Add(new LookupParameter<ItemList<IItem>>("TabuList", "The tabu list."));
96      Parameters.Add(new ValueParameter<BoolValue>("UseAspirationCriterion", "Whether to use the aspiration criterion or not.", new BoolValue(true)));
97      Parameters.Add(new ValueLookupParameter<BoolValue>("Maximization", "True if the problem is a maximization problem, else if it is a minimization problem."));
98      Parameters.Add(new LookupParameter<DoubleValue>("MoveQuality", "The quality of the current move."));
99
100      Parameters.Add(new LookupParameter<DoubleValue>("MoveDistance", "The distance of the move"));
101      Parameters.Add(new LookupParameter<DoubleValue>("MoveOverload", "The overload of the move"));
102      Parameters.Add(new LookupParameter<DoubleValue>("MoveTardiness", "The tardiness of the move"));
103    }
104
105    public override IDeepCloneable Clone(Cloner cloner) {
106      return new PotvinTwoOptStarMoveTabuCriterion(this, cloner);
107    }
108
109    public override IOperation Apply() {
110      ItemList<IItem> tabuList = TabuListParameter.ActualValue;
111      double moveQuality = MoveQualityParameter.ActualValue.Value;
112      bool useAspiration = UseAspirationCriterion.Value;
113      bool isTabu = false;
114      PotvinTwoOptStarMove move = TwoOptStarMoveParameter.ActualValue;
115
116      List<int> segmentX1;
117      List<int> segmentX2;
118      PotvinTwoOptStarMoveMaker.GetSegments(move, out segmentX1, out segmentX2);
119
120      foreach (IItem tabuMove in tabuList) {
121        PotvinTwoOptStarMoveAttribute attribute = tabuMove as PotvinTwoOptStarMoveAttribute;
122
123        if (attribute != null) {
124          double distance = 0;
125          if (MoveDistanceParameter.ActualValue != null)
126            distance = MoveDistanceParameter.ActualValue.Value;
127
128          double overload = 0;
129          if (MoveOverloadParameter.ActualValue != null)
130            overload = MoveOverloadParameter.ActualValue.Value;
131
132          double tardiness = 0;
133          if (MoveTardinessParameter.ActualValue != null)
134            tardiness = MoveTardinessParameter.ActualValue.Value;
135
136          IVRPProblemInstance instance = ProblemInstanceParameter.ActualValue;
137          double quality = attribute.Distance * instance.DistanceFactor.Value;
138
139          IHomogenousCapacitatedProblemInstance cvrp = instance as IHomogenousCapacitatedProblemInstance;
140          if (cvrp != null)
141            quality += attribute.Overload * cvrp.OverloadPenalty.Value;
142
143          ITimeWindowedProblemInstance vrptw = instance as ITimeWindowedProblemInstance;
144          if (vrptw != null)
145            quality += attribute.Tardiness * vrptw.TardinessPenalty.Value;
146
147          if (!useAspiration || moveQuality >= quality) {
148            if (attribute.Tour == move.Tour1 && segmentX2.Contains(attribute.City) ||
149                attribute.Tour == move.Tour2 && segmentX1.Contains(attribute.City)) {
150              isTabu = true;
151              break;
152            }
153
154            if (attribute.Distance == distance && attribute.Overload == overload && attribute.Tardiness == tardiness) {
155              isTabu = true;
156              break;
157            }
158          }
159        }
160      }
161
162      MoveTabuParameter.ActualValue = new BoolValue(isTabu);
163      return base.Apply();
164    }
165  }
166}
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