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source: branches/RAPGA/HeuristicLab.Algorithms.RAPGA/3.3/DuplicatesSelector.cs @ 8377

Last change on this file since 8377 was 8377, checked in by jkarder, 12 years ago

#1247:

  • added support for batch offspring creation
  • added population size analyzer
  • improved operator graph
File size: 3.2 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2012 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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;
23using System.Linq;
24using HeuristicLab.Common;
25using HeuristicLab.Core;
26using HeuristicLab.Optimization;
27using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
28using HeuristicLab.Selection;
29
30namespace HeuristicLab.Algorithms.RAPGA {
31  /// <summary>
32  /// A selection operator which considers a single solution representation and selects duplicates.
33  /// </summary>
34  /// <remarks>
35  /// The remaining scope then contains unique solutions and the selected scope their duplicates.
36  /// </remarks>
37  [Item("DuplicatesSelector", "A selection operator which considers a single solution representation and selects duplicates. The remaining scope then contains unique solutions and the selected scope their duplicates.")]
38  [StorableClass]
39  public sealed class DuplicatesSelector : SingleObjectiveSelector, ISingleObjectiveSelector, ISimilarityBasedOperator {
40    #region ISimilarityBasedOperator Members
41    [Storable]
42    public ISolutionSimilarityCalculator SimilarityCalculator { get; set; }
43    #endregion
44
45    [StorableConstructor]
46    private DuplicatesSelector(bool deserializing) : base(deserializing) { }
47    private DuplicatesSelector(DuplicatesSelector original, Cloner cloner)
48      : base(original, cloner) {
49      this.SimilarityCalculator = cloner.Clone(original.SimilarityCalculator);
50    }
51    public DuplicatesSelector() : base() { }
52
53    public override IDeepCloneable Clone(Cloner cloner) {
54      return new DuplicatesSelector(this, cloner);
55    }
56
57    protected override IScope[] Select(List<IScope> scopes) {
58      bool copy = CopySelected.Value;
59
60      var marks = new bool[scopes.Count];
61      for (int i = 0; i < scopes.Count; i++) {
62        for (int j = i + 1; j < scopes.Count; j++) {
63          if (SimilarityCalculator.Equals(scopes[i], scopes[j])) marks[j] = true;
64        }
65      }
66
67      var selected = new IScope[marks.Count(x => x)];
68      int k = 0;
69      if (copy) {
70        for (int i = 0; i < scopes.Count; i++)
71          if (marks[i]) {
72            selected[k++] = (IScope)scopes[i].Clone();
73          }
74      } else {
75        for (int i = 0; i < scopes.Count; i++)
76          if (marks[i]) {
77            selected[k++] = scopes[i];
78            scopes[i] = null;
79          }
80        scopes.RemoveAll(x => x == null);
81      }
82
83      return selected;
84    }
85  }
86}
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