[9440] | 1 | #region License Information
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| 2 | /* HeuristicLab
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| 3 | * Copyright (C) 2002-2012 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 | using System.Collections.Generic;
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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.Encodings.IntegerVectorEncoding;
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| 27 | using HeuristicLab.Operators;
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| 28 | using HeuristicLab.Optimization;
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| 29 | using HeuristicLab.Parameters;
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| 30 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 31 | using HeuristicLab.Problems.BinPacking.Interfaces;
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| 32 |
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| 33 | namespace HeuristicLab.Encodings.PackingEncoding.GroupingVector {
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| 34 | [Item("SingleGroupingMoveHardTabuCriterion", "<Missing>")]
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| 35 | [StorableClass]
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| 36 | public class SingleGroupingMoveHardTabuCriterion : SingleSuccessorOperator, IGroupingVectorMoveOperator, ITabuChecker {
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| 37 | public override bool CanChangeName {
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| 38 | get { return false; }
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| 39 | }
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[9495] | 40 | public ILookupParameter<IPackingMove> PackingMoveParameter {
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| 41 | get { return (ILookupParameter<IPackingMove>)Parameters["PackingMove"]; }
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[9440] | 42 | }
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| 43 | public ILookupParameter<GroupingVectorEncoding> GroupingVectorParameter {
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| 44 | get { return (ILookupParameter<GroupingVectorEncoding>)Parameters["GroupingVector"]; }
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| 45 | }
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| 46 | public ILookupParameter<ItemList<IItem>> TabuListParameter {
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| 47 | get { return (ILookupParameter<ItemList<IItem>>)Parameters["TabuList"]; }
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| 48 | }
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| 49 | public ILookupParameter<BoolValue> MoveTabuParameter {
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| 50 | get { return (ILookupParameter<BoolValue>)Parameters["MoveTabu"]; }
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| 51 | }
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| 52 | public IValueLookupParameter<BoolValue> MaximizationParameter {
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| 53 | get { return (IValueLookupParameter<BoolValue>)Parameters["Maximization"]; }
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| 54 | }
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| 55 | public ILookupParameter<DoubleValue> MoveQualityParameter {
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| 56 | get { return (ILookupParameter<DoubleValue>)Parameters["MoveQuality"]; }
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| 57 | }
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| 58 | public ValueParameter<BoolValue> UseAspirationCriterionParameter {
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| 59 | get { return (ValueParameter<BoolValue>)Parameters["UseAspirationCriterion"]; }
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| 60 | }
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| 61 |
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| 62 | [StorableConstructor]
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| 63 | protected SingleGroupingMoveHardTabuCriterion(bool deserializing) : base(deserializing) { }
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| 64 | protected SingleGroupingMoveHardTabuCriterion(SingleGroupingMoveHardTabuCriterion original, Cloner cloner) : base(original, cloner) { }
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| 65 | public SingleGroupingMoveHardTabuCriterion()
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| 66 | : base() {
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[9495] | 67 | Parameters.Add(new LookupParameter<IPackingMove>("PackingMove", "The move to evaluate."));
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[9440] | 68 | Parameters.Add(new LookupParameter<GroupingVectorEncoding>("GroupingVector", "The solution to evaluate."));
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| 69 | Parameters.Add(new LookupParameter<BoolValue>("MoveTabu", "The variable to store if a move was tabu."));
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| 70 | Parameters.Add(new LookupParameter<ItemList<IItem>>("TabuList", "The tabu list."));
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| 71 | 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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| 72 | Parameters.Add(new LookupParameter<DoubleValue>("MoveQuality", "The quality of the current move."));
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| 73 | Parameters.Add(new ValueParameter<BoolValue>("UseAspirationCriterion", "Whether to use the aspiration criterion or not.", new BoolValue(true)));
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| 74 | }
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| 75 |
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| 76 | public override IDeepCloneable Clone(Cloner cloner) {
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| 77 | return new SingleGroupingMoveHardTabuCriterion(this, cloner);
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| 78 | }
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| 79 |
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| 80 | public override IOperation Apply() {
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| 81 | ItemList<IItem> tabuList = TabuListParameter.ActualValue;
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[9495] | 82 | SingleGroupingMove move = PackingMoveParameter.ActualValue as SingleGroupingMove;
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[9440] | 83 | GroupingVectorEncoding groupingVector = GroupingVectorParameter.ActualValue;
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| 84 | int length = groupingVector.GroupingVector.Length;
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| 85 | double moveQuality = MoveQualityParameter.ActualValue.Value;
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| 86 | bool maximization = MaximizationParameter.ActualValue.Value;
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| 87 | bool useAspiration = UseAspirationCriterionParameter.Value.Value;
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| 88 | bool isTabu = IsMoveTabu(tabuList, move, groupingVector, moveQuality, maximization, useAspiration);
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| 89 |
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| 90 | MoveTabuParameter.ActualValue = new BoolValue(isTabu);
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| 91 | return base.Apply();
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| 92 | }
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| 93 |
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| 94 | private bool IsMoveTabu(ItemList<IItem> tabuList, SingleGroupingMove move, GroupingVectorEncoding groupingVector, double moveQuality, bool maximization, bool useAspiration) {
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| 95 | var movedGroupingVector = new IntegerVector(groupingVector.GroupingVector);
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| 96 | movedGroupingVector[move.Index] = move.NewGroup;
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| 97 | foreach (IItem tabuMove in tabuList) {
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| 98 | SingleGroupingMoveAttribute sgmAttr = (tabuMove as SingleGroupingMoveAttribute);
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| 99 | if (sgmAttr != null
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| 100 | && (!useAspiration
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| 101 | || maximization && moveQuality <= sgmAttr.MoveQuality
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| 102 | || !maximization && moveQuality >= sgmAttr.MoveQuality)) {
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| 103 | if (move.Index == sgmAttr.ItemIndex || groupingVector.GroupingVector[move.Index] == sgmAttr.AssignedBin)
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| 104 | return true;
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| 105 | }
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| 106 | }
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| 107 | return false;
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| 108 | }
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| 109 | }
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| 110 | }
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