1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2015 Joseph Helm and Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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4 | *
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5 | * This file is part of HeuristicLab.
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6 | *
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7 | * HeuristicLab is free software: you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation, either version 3 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * HeuristicLab is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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19 | */
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20 | #endregion
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21 |
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22 |
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23 | using HeuristicLab.Common;
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24 | using HeuristicLab.Core;
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25 | using HeuristicLab.Data;
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26 | using HeuristicLab.Operators;
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27 | using HeuristicLab.Optimization;
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28 | using HeuristicLab.Parameters;
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29 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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30 | using HeuristicLab.Problems.BinPacking.Interfaces;
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31 |
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32 | namespace HeuristicLab.Encodings.PackingEncoding.PackingSequence {
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33 | [Item("SequenceMoveSoftTabuCriterion", "<Missing>")]
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34 | [StorableClass]
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35 | public class SequenceMoveSoftTabuCriterion : SingleSuccessorOperator, IPackingSequenceMoveOperator, ITabuChecker {
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36 | public override bool CanChangeName {
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37 | get { return false; }
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38 | }
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39 | public ILookupParameter<IPackingMove> PackingMoveParameter {
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40 | get { return (ILookupParameter<IPackingMove>)Parameters["PackingMove"]; }
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41 | }
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42 | public ILookupParameter<PackingSequenceEncoding> PackingSequenceParameter {
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43 | get { return (ILookupParameter<PackingSequenceEncoding>)Parameters["PackingSequence"]; }
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44 | }
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45 | public ILookupParameter<ItemList<IItem>> TabuListParameter {
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46 | get { return (ILookupParameter<ItemList<IItem>>)Parameters["TabuList"]; }
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47 | }
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48 | public ILookupParameter<BoolValue> MoveTabuParameter {
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49 | get { return (ILookupParameter<BoolValue>)Parameters["MoveTabu"]; }
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50 | }
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51 | public IValueLookupParameter<BoolValue> MaximizationParameter {
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52 | get { return (IValueLookupParameter<BoolValue>)Parameters["Maximization"]; }
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53 | }
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54 | public ILookupParameter<DoubleValue> MoveQualityParameter {
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55 | get { return (ILookupParameter<DoubleValue>)Parameters["MoveQuality"]; }
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56 | }
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57 | public ValueParameter<BoolValue> UseAspirationCriterionParameter {
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58 | get { return (ValueParameter<BoolValue>)Parameters["UseAspirationCriterion"]; }
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59 | }
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60 |
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61 | [StorableConstructor]
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62 | protected SequenceMoveSoftTabuCriterion(bool deserializing) : base(deserializing) { }
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63 | protected SequenceMoveSoftTabuCriterion(SequenceMoveSoftTabuCriterion original, Cloner cloner) : base(original, cloner) { }
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64 | public SequenceMoveSoftTabuCriterion()
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65 | : base() {
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66 | Parameters.Add(new LookupParameter<IPackingMove>("PackingMove", "The move to evaluate."));
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67 | Parameters.Add(new LookupParameter<PackingSequenceEncoding>("PackingSequence", "The solution to evaluate."));
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68 | Parameters.Add(new LookupParameter<BoolValue>("MoveTabu", "The variable to store if a move was tabu."));
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69 | Parameters.Add(new LookupParameter<ItemList<IItem>>("TabuList", "The tabu list."));
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70 | Parameters.Add(new ValueLookupParameter<BoolValue>("Maximization", "True if the problem is a maximization problem, else if it is a minimization problem."));
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71 | Parameters.Add(new LookupParameter<DoubleValue>("MoveQuality", "The quality of the current move."));
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72 | Parameters.Add(new ValueParameter<BoolValue>("UseAspirationCriterion", "Whether to use the aspiration criterion or not.", new BoolValue(true)));
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73 | }
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74 |
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75 | public override IDeepCloneable Clone(Cloner cloner) {
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76 | return new SequenceMoveSoftTabuCriterion(this, cloner);
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77 | }
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78 |
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79 | public override IOperation Apply() {
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80 | ItemList<IItem> tabuList = TabuListParameter.ActualValue;
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81 | SequenceMove move = PackingMoveParameter.ActualValue as SequenceMove;
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82 | PackingSequenceEncoding PackingSequence = PackingSequenceParameter.ActualValue;
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83 | int length = PackingSequence.PackingSequence.Length;
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84 | double moveQuality = MoveQualityParameter.ActualValue.Value;
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85 | bool maximization = MaximizationParameter.ActualValue.Value;
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86 | bool useAspiration = UseAspirationCriterionParameter.Value.Value;
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87 | bool isTabu = IsMoveTabu(tabuList, move, PackingSequence, moveQuality, maximization, useAspiration);
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88 |
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89 | MoveTabuParameter.ActualValue = new BoolValue(isTabu);
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90 | return base.Apply();
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91 | }
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92 |
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93 | private bool IsMoveTabu(ItemList<IItem> tabuList, SequenceMove move, PackingSequenceEncoding PackingSequence, double moveQuality, bool maximization, bool useAspiration) {
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94 | bool isTabu = false;
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95 | var attributes = tabuList.FindAll(ta => ta.GetType().Equals(move.GetMoveAttributeType()));
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96 |
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97 | foreach (IItem attr in attributes) {
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98 | SequenceMoveAttribute gvAttr = attr as SequenceMoveAttribute;
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99 | if (gvAttr != null
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100 | && (!useAspiration
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101 | || maximization && moveQuality <= gvAttr.MoveQuality
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102 | || !maximization && moveQuality >= gvAttr.MoveQuality)) {
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103 |
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104 | isTabu = move.BelongsToAttribute(gvAttr, false);
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105 | }
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106 | if (isTabu) break;
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107 | }
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108 |
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109 | return isTabu;
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110 | }
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111 | }
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112 | }
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