[3418] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[7259] | 3 | * Copyright (C) 2002-2012 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[3418] | 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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[4722] | 22 | using HeuristicLab.Common;
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[3418] | 23 | using HeuristicLab.Core;
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| 24 | using HeuristicLab.Data;
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| 25 | using HeuristicLab.Operators;
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| 26 | using HeuristicLab.Parameters;
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| 27 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 28 |
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| 29 | namespace HeuristicLab.Optimization.Operators {
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| 30 | [Item("TabuMaker", "Base class for all operators that set a move tabu.")]
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| 31 | [StorableClass]
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| 32 | public abstract class TabuMaker : SingleSuccessorOperator, ITabuMaker {
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[3520] | 33 | public override bool CanChangeName {
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| 34 | get { return false; }
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| 35 | }
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[3418] | 36 | public LookupParameter<ItemList<IItem>> TabuListParameter {
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| 37 | get { return (LookupParameter<ItemList<IItem>>)Parameters["TabuList"]; }
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| 38 | }
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| 39 | public ValueLookupParameter<IntValue> TabuTenureParameter {
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| 40 | get { return (ValueLookupParameter<IntValue>)Parameters["TabuTenure"]; }
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| 41 | }
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| 42 | public ILookupParameter<DoubleValue> MoveQualityParameter {
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| 43 | get { return (ILookupParameter<DoubleValue>)Parameters["MoveQuality"]; }
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| 44 | }
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| 45 | public ILookupParameter<DoubleValue> QualityParameter {
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| 46 | get { return (ILookupParameter<DoubleValue>)Parameters["Quality"]; }
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| 47 | }
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| 48 | public IValueLookupParameter<BoolValue> MaximizationParameter {
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| 49 | get { return (IValueLookupParameter<BoolValue>)Parameters["Maximization"]; }
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| 50 | }
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| 51 |
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[4722] | 52 | [StorableConstructor]
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| 53 | protected TabuMaker(bool deserializing) : base(deserializing) { }
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| 54 | protected TabuMaker(TabuMaker original, Cloner cloner) : base(original, cloner) { }
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[3418] | 55 | protected TabuMaker()
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| 56 | : base() {
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| 57 | Parameters.Add(new LookupParameter<ItemList<IItem>>("TabuList", "The tabu list where move attributes are stored."));
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| 58 | Parameters.Add(new ValueLookupParameter<IntValue>("TabuTenure", "The tenure of the tabu list."));
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| 59 | Parameters.Add(new LookupParameter<DoubleValue>("MoveQuality", "The quality of the move."));
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| 60 | Parameters.Add(new LookupParameter<DoubleValue>("Quality", "The quality of the solution."));
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| 61 | 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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| 62 | }
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| 63 |
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| 64 | public override IOperation Apply() {
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| 65 | ItemList<IItem> tabuList = TabuListParameter.ActualValue;
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| 66 | int tabuTenure = TabuTenureParameter.ActualValue.Value;
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[8286] | 67 | if (tabuTenure > 0) {
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| 68 | // overlength should always be zero
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| 69 | int overlength = tabuList.Count - tabuTenure;
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| 70 | // copy and remove from back for performance
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| 71 | if (overlength >= 0) {
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| 72 | for (int i = 0; i < tabuTenure - 1; i++)
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| 73 | tabuList[i] = tabuList[i + overlength + 1];
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| 74 | while (tabuList.Count >= tabuTenure)
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| 75 | tabuList.RemoveAt(tabuList.Count - 1);
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| 76 | }
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[3418] | 77 |
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[8286] | 78 | tabuList.Add(GetTabuAttribute(MaximizationParameter.ActualValue.Value, QualityParameter.ActualValue.Value,
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| 79 | MoveQualityParameter.ActualValue.Value));
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[3418] | 80 | }
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| 81 | return base.Apply();
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| 82 | }
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| 83 |
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| 84 | protected abstract IItem GetTabuAttribute(bool maximization, double quality, double moveQuality);
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| 85 | }
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| 86 | }
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