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source: branches/HeuristicLab.BinPacking/HeuristicLab.Problems.BinPacking/3.3/Encodings/GroupingVector/Moves/SingleGrouping/SingleGroupingMoveHardTabuCriterion.cs @ 9440

Last change on this file since 9440 was 9440, checked in by jhelm, 11 years ago

#1966: Implemented new encoding (MultiComponentVector/MCV); Implemented move-operators for MCV and GV encodings; Implemented new decoding-methods for PS, GV and MCV encodings (ExtremePoint-based packing);

File size: 5.5 KB
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1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2012 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.Encodings.IntegerVectorEncoding;
27using HeuristicLab.Operators;
28using HeuristicLab.Optimization;
29using HeuristicLab.Parameters;
30using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
31using HeuristicLab.Problems.BinPacking.Interfaces;
32
33namespace HeuristicLab.Encodings.PackingEncoding.GroupingVector {
34  [Item("SingleGroupingMoveHardTabuCriterion", "<Missing>")]
35  [StorableClass]
36  public class SingleGroupingMoveHardTabuCriterion : SingleSuccessorOperator, IGroupingVectorMoveOperator, ITabuChecker {
37    public override bool CanChangeName {
38      get { return false; }
39    }
40    public ILookupParameter<SingleGroupingMove> SingleGroupingMoveParameter {
41      get { return (ILookupParameter<SingleGroupingMove>)Parameters["SingleGroupingMove"]; }
42    }
43    public ILookupParameter<GroupingVectorEncoding> GroupingVectorParameter {
44      get { return (ILookupParameter<GroupingVectorEncoding>)Parameters["GroupingVector"]; }
45    }
46    public ILookupParameter<ItemList<IItem>> TabuListParameter {
47      get { return (ILookupParameter<ItemList<IItem>>)Parameters["TabuList"]; }
48    }
49    public ILookupParameter<BoolValue> MoveTabuParameter {
50      get { return (ILookupParameter<BoolValue>)Parameters["MoveTabu"]; }
51    }
52    public IValueLookupParameter<BoolValue> MaximizationParameter {
53      get { return (IValueLookupParameter<BoolValue>)Parameters["Maximization"]; }
54    }
55    public ILookupParameter<DoubleValue> MoveQualityParameter {
56      get { return (ILookupParameter<DoubleValue>)Parameters["MoveQuality"]; }
57    }
58    public ValueParameter<BoolValue> UseAspirationCriterionParameter {
59      get { return (ValueParameter<BoolValue>)Parameters["UseAspirationCriterion"]; }
60    }
61
62    [StorableConstructor]
63    protected SingleGroupingMoveHardTabuCriterion(bool deserializing) : base(deserializing) { }
64    protected SingleGroupingMoveHardTabuCriterion(SingleGroupingMoveHardTabuCriterion original, Cloner cloner) : base(original, cloner) { }
65    public SingleGroupingMoveHardTabuCriterion()
66      : base() {
67      Parameters.Add(new LookupParameter<SingleGroupingMove>("SingleGroupingMove", "The move to evaluate."));
68      Parameters.Add(new LookupParameter<GroupingVectorEncoding>("GroupingVector", "The solution to evaluate."));
69      Parameters.Add(new LookupParameter<BoolValue>("MoveTabu", "The variable to store if a move was tabu."));
70      Parameters.Add(new LookupParameter<ItemList<IItem>>("TabuList", "The tabu list."));
71      Parameters.Add(new ValueLookupParameter<BoolValue>("Maximization", "True if the problem is a maximization problem, else if it is a minimization problem."));
72      Parameters.Add(new LookupParameter<DoubleValue>("MoveQuality", "The quality of the current move."));
73      Parameters.Add(new ValueParameter<BoolValue>("UseAspirationCriterion", "Whether to use the aspiration criterion or not.", new BoolValue(true)));
74    }
75
76    public override IDeepCloneable Clone(Cloner cloner) {
77      return new SingleGroupingMoveHardTabuCriterion(this, cloner);
78    }
79
80    public override IOperation Apply() {
81      ItemList<IItem> tabuList = TabuListParameter.ActualValue;
82      SingleGroupingMove move = SingleGroupingMoveParameter.ActualValue;
83      GroupingVectorEncoding groupingVector = GroupingVectorParameter.ActualValue;
84      int length = groupingVector.GroupingVector.Length;
85      double moveQuality = MoveQualityParameter.ActualValue.Value;
86      bool maximization = MaximizationParameter.ActualValue.Value;   
87      bool useAspiration = UseAspirationCriterionParameter.Value.Value;
88      bool isTabu = IsMoveTabu(tabuList, move, groupingVector, moveQuality, maximization, useAspiration);
89
90      MoveTabuParameter.ActualValue = new BoolValue(isTabu);
91      return base.Apply();
92    }
93
94    private bool IsMoveTabu(ItemList<IItem> tabuList, SingleGroupingMove move, GroupingVectorEncoding groupingVector, double moveQuality, bool maximization, bool useAspiration) {
95      var movedGroupingVector = new IntegerVector(groupingVector.GroupingVector);
96      movedGroupingVector[move.Index] = move.NewGroup;
97      foreach (IItem tabuMove in tabuList) {
98        SingleGroupingMoveAttribute sgmAttr = (tabuMove as SingleGroupingMoveAttribute);
99        if (sgmAttr != null
100          && (!useAspiration
101              || maximization && moveQuality <= sgmAttr.MoveQuality
102              || !maximization && moveQuality >= sgmAttr.MoveQuality)) {
103                if (move.Index == sgmAttr.ItemIndex || groupingVector.GroupingVector[move.Index] == sgmAttr.AssignedBin)
104                  return true;
105        }
106      }
107      return false;
108    }
109  }
110}
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