1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2010 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;
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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.Optimization;
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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.Encodings.BinaryVectorEncoding {
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31 | [Item("PreventOneBitflipTabuMoveEvaluator", "Prevents peforming a one bitflip move again.")]
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32 | [StorableClass]
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33 | public class PreventOneBitflipTabuMoveEvaluator : SingleSuccessorOperator, IOneBitflipMoveOperator, ITabuChecker {
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34 | public ILookupParameter<OneBitflipMove> OneBitflipMoveParameter {
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35 | get { return (LookupParameter<OneBitflipMove>)Parameters["OneBitflipMove"]; }
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36 | }
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37 | public ILookupParameter<BinaryVector> BinaryVectorParameter {
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38 | get { return (LookupParameter<BinaryVector>)Parameters["BinaryVector"]; }
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39 | }
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40 | public ILookupParameter<ItemList<IItem>> TabuListParameter {
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41 | get { return (ILookupParameter<ItemList<IItem>>)Parameters["TabuList"]; }
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42 | }
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43 | public ILookupParameter<BoolValue> MoveTabuParameter {
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44 | get { return (ILookupParameter<BoolValue>)Parameters["MoveTabu"]; }
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45 | }
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46 | private ScopeParameter CurrentScopeParameter {
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47 | get { return (ScopeParameter)Parameters["CurrentScope"]; }
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48 | }
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49 |
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50 | public PreventOneBitflipTabuMoveEvaluator()
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51 | : base() {
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52 | Parameters.Add(new LookupParameter<OneBitflipMove>("OneBitflipMove", "The move to evaluate."));
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53 | Parameters.Add(new LookupParameter<BoolValue>("MoveTabu", "The variable to store if a move was tabu."));
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54 | Parameters.Add(new LookupParameter<BinaryVector>("BinaryVector", "The solution as permutation."));
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55 | Parameters.Add(new LookupParameter<ItemList<IItem>>("TabuList", "The tabu list."));
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56 | Parameters.Add(new ScopeParameter("CurrentScope", "The current scope."));
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57 | }
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58 |
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59 | public override IOperation Apply() {
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60 | ItemList<IItem> tabuList = TabuListParameter.ActualValue;
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61 | OneBitflipMove move = OneBitflipMoveParameter.ActualValue;
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62 | bool isTabu = false;
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63 | foreach (IItem tabuMove in tabuList) {
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64 | OneBitflipMove attribute = (tabuMove as OneBitflipMove);
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65 | if (attribute != null) {
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66 | if (attribute.Index == move.Index) {
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67 | isTabu = true;
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68 | break;
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69 | }
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70 | }
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71 | }
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72 | MoveTabuParameter.ActualValue = new BoolValue(isTabu);
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73 | return base.Apply();
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74 | }
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75 |
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76 | public override bool CanChangeName {
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77 | get { return false; }
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78 | }
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79 | }
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80 | }
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