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source: stable/HeuristicLab.Optimization.Operators/3.3/UnidirectionalRingMigrator.cs @ 12325

Last change on this file since 12325 was 12009, checked in by ascheibe, 10 years ago

#2212 updated copyright year

File size: 3.1 KB
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[2]1#region License Information
2/* HeuristicLab
[12009]3 * Copyright (C) 2002-2015 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
[2]4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System.Collections.Generic;
[4722]23using HeuristicLab.Common;
[2]24using HeuristicLab.Core;
[3356]25using HeuristicLab.Operators;
26using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
[2]27
[3356]28namespace HeuristicLab.Optimization.Operators {
[881]29  /// <summary>
[3356]30  /// Operator that migrates the selected sub scopes in each subscope in an unidirectional ring.
[881]31  /// </summary>
[3356]32  [Item("UnidirectionalRingMigrator", "Migrates the selected sub scopes in each subscope in an unidirectional ring.")]
33  [StorableClass]
34  public class UnidirectionalRingMigrator : SingleSuccessorOperator, IMigrator {
[4722]35    [StorableConstructor]
36    protected UnidirectionalRingMigrator(bool deserializing) : base(deserializing) { }
37    protected UnidirectionalRingMigrator(UnidirectionalRingMigrator original, Cloner cloner) : base(original, cloner) { }
38    public UnidirectionalRingMigrator() : base() { }
39
40    public override IDeepCloneable Clone(Cloner cloner) {
41      return new UnidirectionalRingMigrator(this, cloner);
42    }
43
[881]44    /// <summary>
45    /// Migrates every first sub scope of each child to its left neighbour (like a ring).
46    /// <pre>                                                               
[3356]47    ///          __ scope __              __ scope __
48    ///         /     |     \            /     |     \
49    ///       Pop1   Pop2   Pop3  =>   Pop1   Pop2   Pop3
50    ///       / \    / \    / \        / \    / \    / \
51    ///      R   S  R   S  R   S      R   S  R   S  R   S
52    ///     /|\  | /|\  | /|\  |     /|\  | /|\  | /|\  |
53    ///     ABC  A DEF  D GHI  G     ABC  G DEF  A GHI  D
[881]54    /// </pre>
55    /// </summary>
[3356]56    /// <returns>The next operation.</returns>
57    public override IOperation Apply() {
58      IScope scope = ExecutionContext.Scope;
59      List<IScope> emigrantsList = new List<IScope>();
[2]60
61      for (int i = 0; i < scope.SubScopes.Count; i++) {
62        IScope emigrants = scope.SubScopes[i].SubScopes[1];
[3356]63        scope.SubScopes[i].SubScopes.Remove(emigrants);
[2]64        emigrantsList.Add(emigrants);
65      }
66
67      // shift first emigrants to end of list
68      emigrantsList.Add(emigrantsList[0]);
69      emigrantsList.RemoveAt(0);
70
71      for (int i = 0; i < scope.SubScopes.Count; i++)
[3356]72        scope.SubScopes[i].SubScopes.Add(emigrantsList[i]);
[2]73
[3356]74      return base.Apply();
[2]75    }
76  }
77}
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