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 HeuristicLab.Core;
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23 | using HeuristicLab.Optimization.Operators;
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24 | using HeuristicLab.Parameters;
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25 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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26 |
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27 | namespace HeuristicLab.Encodings.PermutationEncoding {
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28 | [Item("TranslocationMoveTabuMaker", "Declares a given translocation or insertion move (3-opt) as tabu, by adding its attributes to the tabu list.")]
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29 | [StorableClass]
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30 | public class TranslocationMoveTabuMaker : TabuMaker, IPermutationTranslocationMoveOperator {
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31 | public ILookupParameter<Permutation> PermutationParameter {
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32 | get { return (ILookupParameter<Permutation>)Parameters["Permutation"]; }
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33 | }
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34 | public ILookupParameter<TranslocationMove> TranslocationMoveParameter {
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35 | get { return (LookupParameter<TranslocationMove>)Parameters["TranslocationMove"]; }
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36 | }
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37 |
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38 | public TranslocationMoveTabuMaker()
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39 | : base() {
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40 | Parameters.Add(new LookupParameter<TranslocationMove>("TranslocationMove", "The move that was made."));
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41 | Parameters.Add(new LookupParameter<Permutation>("Permutation", "The solution as permutation."));
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42 | }
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43 |
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44 | protected override IItem GetTabuAttribute(bool maximization, double quality, double moveQuality) {
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45 | TranslocationMove move = TranslocationMoveParameter.ActualValue;
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46 | Permutation permutation = PermutationParameter.ActualValue;
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47 | double baseQuality = moveQuality;
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48 | if (maximization && quality > moveQuality || !maximization && quality < moveQuality) baseQuality = quality; // we make an uphill move, the lower bound is the solution quality
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49 | if (permutation.PermutationType == PermutationTypes.Absolute) {
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50 | int[] numbers = new int[move.Index2 - move.Index1 + 1];
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51 | for (int i = 0; i < numbers.Length; i++) {
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52 | numbers[i] = permutation[i + move.Index1];
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53 | }
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54 | return new TranslocationMoveAbsoluteAttribute(numbers, move.Index1, move.Index3, baseQuality); ;
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55 | } else {
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56 | if (move.Index3 > move.Index1)
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57 | return new TranslocationMoveRelativeAttribute(permutation.GetCircular(move.Index1 - 1),
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58 | permutation[move.Index1],
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59 | permutation[move.Index2],
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60 | permutation.GetCircular(move.Index2 + 1),
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61 | permutation.GetCircular(move.Index3 + move.Index2 - move.Index1),
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62 | permutation.GetCircular(move.Index3 + move.Index2 - move.Index1 + 1),
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63 | baseQuality);
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64 | else
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65 | return new TranslocationMoveRelativeAttribute(permutation.GetCircular(move.Index1 - 1),
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66 | permutation[move.Index1],
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67 | permutation[move.Index2],
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68 | permutation.GetCircular(move.Index2 + 1),
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69 | permutation.GetCircular(move.Index3 - 1),
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70 | permutation.GetCircular(move.Index3),
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71 | baseQuality);
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72 | }
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73 | }
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74 | }
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75 | }
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