[2] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[3356] | 3 | * Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[2] | 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.Collections.Generic;
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| 23 | using HeuristicLab.Core;
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[3356] | 24 | using HeuristicLab.Operators;
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| 25 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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[2] | 26 |
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[3356] | 27 | namespace HeuristicLab.Optimization.Operators {
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[881] | 28 | /// <summary>
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[3356] | 29 | /// Operator that migrates the selected sub scopes in each subscope in an unidirectional ring.
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[881] | 30 | /// </summary>
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[3356] | 31 | [Item("UnidirectionalRingMigrator", "Migrates the selected sub scopes in each subscope in an unidirectional ring.")]
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| 32 | [StorableClass]
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| 33 | public class UnidirectionalRingMigrator : SingleSuccessorOperator, IMigrator {
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[881] | 34 | /// <summary>
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| 35 | /// Migrates every first sub scope of each child to its left neighbour (like a ring).
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| 36 | /// <pre>
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[3356] | 37 | /// __ scope __ __ scope __
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| 38 | /// / | \ / | \
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| 39 | /// Pop1 Pop2 Pop3 => Pop1 Pop2 Pop3
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| 40 | /// / \ / \ / \ / \ / \ / \
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| 41 | /// R S R S R S R S R S R S
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| 42 | /// /|\ | /|\ | /|\ | /|\ | /|\ | /|\ |
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| 43 | /// ABC A DEF D GHI G ABC G DEF A GHI D
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[881] | 44 | /// </pre>
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| 45 | /// </summary>
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[3356] | 46 | /// <returns>The next operation.</returns>
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| 47 | public override IOperation Apply() {
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| 48 | IScope scope = ExecutionContext.Scope;
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| 49 | List<IScope> emigrantsList = new List<IScope>();
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[2] | 50 |
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| 51 | for (int i = 0; i < scope.SubScopes.Count; i++) {
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| 52 | IScope emigrants = scope.SubScopes[i].SubScopes[1];
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[3356] | 53 | scope.SubScopes[i].SubScopes.Remove(emigrants);
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[2] | 54 | emigrantsList.Add(emigrants);
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| 55 | }
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| 56 |
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| 57 | // shift first emigrants to end of list
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| 58 | emigrantsList.Add(emigrantsList[0]);
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| 59 | emigrantsList.RemoveAt(0);
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| 60 |
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| 61 | for (int i = 0; i < scope.SubScopes.Count; i++)
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[3356] | 62 | scope.SubScopes[i].SubScopes.Add(emigrantsList[i]);
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[2] | 63 |
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[3356] | 64 | return base.Apply();
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[2] | 65 | }
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| 66 | }
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| 67 | }
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