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.Linq;
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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.Operators;
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27 | using HeuristicLab.Optimization;
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28 | using HeuristicLab.Parameters;
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29 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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30 |
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31 | namespace HeuristicLab.Algorithms.TabuSearch {
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32 | [StorableClass]
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33 | [Item("TabuNeighborhoodAnalyzer", "Analyzes the tabu neighborhood")]
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34 | public class TabuNeighborhoodAnalyzer : SingleSuccessorOperator, IAnalyzer {
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35 | public ScopeTreeLookupParameter<BoolValue> IsTabuParameter {
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36 | get { return (ScopeTreeLookupParameter<BoolValue>)Parameters["IsTabu"]; }
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37 | }
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38 | public LookupParameter<PercentValue> PercentTabuParameter {
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39 | get { return (LookupParameter<PercentValue>)Parameters["PercentTabu"]; }
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40 | }
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41 | public LookupParameter<ResultCollection> ResultsParameter {
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42 | get { return (LookupParameter<ResultCollection>)Parameters["Results"]; }
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43 | }
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44 |
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45 | [StorableConstructor]
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46 | protected TabuNeighborhoodAnalyzer(bool deserializing) : base(deserializing) { }
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47 | protected TabuNeighborhoodAnalyzer(TabuNeighborhoodAnalyzer original, Cloner cloner)
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48 | : base(original, cloner) {
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49 | }
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50 | public override IDeepCloneable Clone(Cloner cloner) {
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51 | return new TabuNeighborhoodAnalyzer(this, cloner);
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52 | }
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53 | public TabuNeighborhoodAnalyzer()
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54 | : base() {
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55 | Parameters.Add(new ScopeTreeLookupParameter<BoolValue>("IsTabu", "A value that determines if a move is tabu or not."));
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56 | Parameters.Add(new LookupParameter<PercentValue>("PercentTabu", "Indicates how much of the neighborhood is tabu."));
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57 | Parameters.Add(new LookupParameter<ResultCollection>("Results", "The result collection where the value should be stored."));
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58 | }
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59 |
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60 | public override IOperation Apply(IExecutionContext context) {
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61 | ItemArray<BoolValue> tabu = IsTabuParameter.ActualValue;
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62 | if (tabu.Length > 0) {
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63 | PercentValue value = PercentTabuParameter.ActualValue;
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64 | if (value == null) {
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65 | value = new PercentValue();
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66 | PercentTabuParameter.ActualValue = value;
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67 | }
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68 | value.Value = tabu.Where(x => x.Value).Count() / (double)tabu.Length;
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69 | ResultCollection results = ResultsParameter.ActualValue;
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70 | if (results != null) {
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71 | IResult result = null;
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72 | results.TryGetValue(PercentTabuParameter.ActualName, out result);
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73 | if (result != null)
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74 | result.Value = value;
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75 | else
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76 | results.Add(new Result(PercentTabuParameter.ActualName, "Indicates how much of the neighborhood is tabu.", (IItem)value.Clone()));
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77 | }
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78 | }
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79 | return base.Apply(context);
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80 | }
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81 | }
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82 | }
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