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source: branches/OaaS/HeuristicLab.Optimization.Operators/3.3/SingleObjectiveSolutionSimilarityCalculator.cs @ 9363

Last change on this file since 9363 was 9363, checked in by spimming, 11 years ago

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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 HeuristicLab.Common;
23using HeuristicLab.Core;
24using HeuristicLab.Data;
25using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
26
27namespace HeuristicLab.Optimization.Operators {
28  /// <summary>
29  /// A base class for items that perform similarity calculation between two single objective solutions.
30  /// </summary>
31  [Item("SimilarityCalculator", "A base class for items that perform similarity calculation between two solutions.")]
32  [StorableClass]
33  public abstract class SingleObjectiveSolutionSimilarityCalculator : SolutionSimilarityCalculator, ISingleObjectiveSolutionSimilarityCalculator {
34    #region Properties
35    [Storable]
36    public string SolutionVariableName { get; set; }
37    [Storable]
38    public string QualityVariableName { get; set; }
39    #endregion
40
41    [StorableConstructor]
42    protected SingleObjectiveSolutionSimilarityCalculator(bool deserializing) : base(deserializing) { }
43    protected SingleObjectiveSolutionSimilarityCalculator(SingleObjectiveSolutionSimilarityCalculator original, Cloner cloner)
44      : base(original, cloner) {
45      this.SolutionVariableName = original.SolutionVariableName;
46      this.QualityVariableName = original.QualityVariableName;
47    }
48    protected SingleObjectiveSolutionSimilarityCalculator() : base() { }
49
50    public override bool Equals(IScope x, IScope y) {
51      if (object.ReferenceEquals(x, y)) return true;
52      if (x == null || y == null) return false;
53      double q1 = ((DoubleValue)x.Variables[QualityVariableName].Value).Value;
54      double q2 = ((DoubleValue)y.Variables[QualityVariableName].Value).Value;
55      return q1.IsAlmost(q2) && CalculateSolutionSimilarity(x, y).IsAlmost(1.0);
56    }
57
58    public override int GetHashCode(IScope scope) {
59      return ((DoubleValue)scope.Variables[QualityVariableName].Value).Value.GetHashCode();
60    }
61  }
62}
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