[3418] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[15584] | 3 | * Copyright (C) 2002-2018 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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[9001] | 22 | using System;
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[4722] | 23 | using HeuristicLab.Common;
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[3418] | 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.Parameters;
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| 28 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 29 |
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| 30 | namespace HeuristicLab.Optimization.Operators {
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| 31 | [Item("TabuMaker", "Base class for all operators that set a move tabu.")]
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| 32 | [StorableClass]
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[12005] | 33 | public abstract class TabuMaker : SingleSuccessorOperator, ITabuMaker, ISingleObjectiveOperator {
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[3520] | 34 | public override bool CanChangeName {
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| 35 | get { return false; }
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| 36 | }
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[3418] | 37 | public LookupParameter<ItemList<IItem>> TabuListParameter {
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| 38 | get { return (LookupParameter<ItemList<IItem>>)Parameters["TabuList"]; }
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| 39 | }
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| 40 | public ValueLookupParameter<IntValue> TabuTenureParameter {
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| 41 | get { return (ValueLookupParameter<IntValue>)Parameters["TabuTenure"]; }
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| 42 | }
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| 43 | public ILookupParameter<DoubleValue> MoveQualityParameter {
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| 44 | get { return (ILookupParameter<DoubleValue>)Parameters["MoveQuality"]; }
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| 45 | }
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| 46 | public ILookupParameter<DoubleValue> QualityParameter {
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| 47 | get { return (ILookupParameter<DoubleValue>)Parameters["Quality"]; }
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| 48 | }
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| 49 | public IValueLookupParameter<BoolValue> MaximizationParameter {
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| 50 | get { return (IValueLookupParameter<BoolValue>)Parameters["Maximization"]; }
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| 51 | }
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| 52 |
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[4722] | 53 | [StorableConstructor]
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| 54 | protected TabuMaker(bool deserializing) : base(deserializing) { }
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| 55 | protected TabuMaker(TabuMaker original, Cloner cloner) : base(original, cloner) { }
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[3418] | 56 | protected TabuMaker()
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| 57 | : base() {
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| 58 | Parameters.Add(new LookupParameter<ItemList<IItem>>("TabuList", "The tabu list where move attributes are stored."));
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| 59 | Parameters.Add(new ValueLookupParameter<IntValue>("TabuTenure", "The tenure of the tabu list."));
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| 60 | Parameters.Add(new LookupParameter<DoubleValue>("MoveQuality", "The quality of the move."));
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| 61 | Parameters.Add(new LookupParameter<DoubleValue>("Quality", "The quality of the solution."));
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| 62 | 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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| 63 | }
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| 64 |
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| 65 | public override IOperation Apply() {
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| 66 | ItemList<IItem> tabuList = TabuListParameter.ActualValue;
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| 67 | int tabuTenure = TabuTenureParameter.ActualValue.Value;
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[9001] | 68 | if (tabuTenure == 0) return base.Apply();
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| 69 | if (tabuTenure < 0) throw new InvalidOperationException("A TabuTenure of less than 0 is not allowed.");
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[3418] | 70 |
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| 71 | int overlength = tabuList.Count - tabuTenure;
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| 72 | if (overlength >= 0) {
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| 73 | for (int i = 0; i < tabuTenure - 1; i++)
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| 74 | tabuList[i] = tabuList[i + overlength + 1];
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| 75 | while (tabuList.Count >= tabuTenure)
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| 76 | tabuList.RemoveAt(tabuList.Count - 1);
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| 77 | }
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| 78 |
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| 79 | tabuList.Add(GetTabuAttribute(MaximizationParameter.ActualValue.Value, QualityParameter.ActualValue.Value, MoveQualityParameter.ActualValue.Value));
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| 80 | return base.Apply();
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| 81 | }
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| 82 |
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| 83 | protected abstract IItem GetTabuAttribute(bool maximization, double quality, double moveQuality);
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| 84 | }
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| 85 | }
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