| 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.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.Optimization.Operators;
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| 29 | using HeuristicLab.Parameters;
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| 30 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 31 |
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| 32 | namespace HeuristicLab.Encodings.PermutationEncoding {
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| 33 | [Item("InversionMoveTabuMaker", "Declares a given inversion move (2-opt) as tabu, by adding its attributes to the tabu list and also store the solution quality or the move quality (whichever is better).")]
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| 34 | [StorableClass]
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| 35 | public class InversionMoveTabuMaker : TabuMaker, IPermutationInversionMoveOperator {
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| 36 | public ILookupParameter<Permutation> PermutationParameter {
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| 37 | get { return (ILookupParameter<Permutation>)Parameters["Permutation"]; }
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| 38 | }
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| 39 | public ILookupParameter<InversionMove> InversionMoveParameter {
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| 40 | get { return (LookupParameter<InversionMove>)Parameters["InversionMove"]; }
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| 41 | }
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| 42 |
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| 43 | public InversionMoveTabuMaker()
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| 44 | : base() {
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| 45 | Parameters.Add(new LookupParameter<InversionMove>("InversionMove", "The move that was made."));
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| 46 | Parameters.Add(new LookupParameter<Permutation>("Permutation", "The solution as permutation."));
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| 47 | }
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| 48 |
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| 49 | protected override IItem GetTabuAttribute(bool maximization, double quality, double moveQuality) {
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| 50 | InversionMove move = InversionMoveParameter.ActualValue;
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| 51 | Permutation permutation = PermutationParameter.ActualValue;
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| 52 | double baseQuality = moveQuality;
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| 53 | 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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| 54 | if (permutation.PermutationType == PermutationTypes.Absolute)
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| 55 | return new InversionMoveAbsoluteAttribute(move.Index1, permutation[move.Index1], move.Index2, permutation[move.Index2], baseQuality);
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| 56 | else
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| 57 | return new InversionMoveRelativeAttribute(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 | baseQuality);
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| 62 | }
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| 63 | }
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| 64 | }
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