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source: stable/HeuristicLab.Problems.QuadraticAssignment/3.3/Analyzers/QAPAlleleFrequencyAnalyzer.cs

Last change on this file was 17181, checked in by swagner, 5 years ago

#2875: Merged r17180 from trunk to stable

File size: 3.4 KB
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[5996]1#region License Information
2/* HeuristicLab
[17181]3 * Copyright (C) Heuristic and Evolutionary Algorithms Laboratory (HEAL)
[5996]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
[6628]22using System.Collections.Generic;
[5996]23using HeuristicLab.Analysis;
24using HeuristicLab.Common;
25using HeuristicLab.Core;
26using HeuristicLab.Data;
27using HeuristicLab.Encodings.PermutationEncoding;
28using HeuristicLab.Parameters;
[17097]29using HEAL.Attic;
[5996]30
31namespace HeuristicLab.Problems.QuadraticAssignment {
32  /// <summary>
33  /// An operator for analyzing the frequency of alleles in solutions of Quadratic Assignment Problems.
34  /// </summary>
35  [Item("QAPAlleleFrequencyAnalyzer", "An operator for analyzing the frequency of alleles in solutions of Quadratic Assignment Problems.")]
[17097]36  [StorableType("490E5FD6-A269-4F5F-AC07-12056CDFFC7F")]
[5996]37  public sealed class QAPAlleleFrequencyAnalyzer : AlleleFrequencyAnalyzer<Permutation> {
38    public LookupParameter<DoubleMatrix> WeightsParameter {
39      get { return (LookupParameter<DoubleMatrix>)Parameters["Weights"]; }
40    }
41    public LookupParameter<DoubleMatrix> DistancesParameter {
42      get { return (LookupParameter<DoubleMatrix>)Parameters["Distances"]; }
43    }
44
45    [StorableConstructor]
[17097]46    private QAPAlleleFrequencyAnalyzer(StorableConstructorFlag _) : base(_) { }
[5996]47    private QAPAlleleFrequencyAnalyzer(QAPAlleleFrequencyAnalyzer original, Cloner cloner) : base(original, cloner) { }
48    public QAPAlleleFrequencyAnalyzer()
49      : base() {
50      Parameters.Add(new LookupParameter<DoubleMatrix>("Weights", "The matrix contains the weights between the facilities."));
51      Parameters.Add(new LookupParameter<DoubleMatrix>("Distances", "The matrix which contains the distances between the locations."));
52    }
53
54    public override IDeepCloneable Clone(Cloner cloner) {
55      return new QAPAlleleFrequencyAnalyzer(this, cloner);
56    }
57
58    protected override Allele[] CalculateAlleles(Permutation solution) {
[6628]59      Allele[] alleles = new Allele[solution.Length * solution.Length];
60      Dictionary<string, int> allelesDict = new Dictionary<string, int>();
[5996]61      DoubleMatrix weights = WeightsParameter.ActualValue;
62      DoubleMatrix distances = DistancesParameter.ActualValue;
63      double impact;
64
[6628]65      for (int x = 0; x < solution.Length; x++) {
66        for (int y = 0; y < solution.Length; y++) {
67          string allele = weights[x, y].ToString() + ">" + distances[solution[x], solution[y]].ToString();
68          int repetition = 1;
69          if (allelesDict.ContainsKey(allele)) repetition += allelesDict[allele];
70          allelesDict[allele] = repetition;
71          impact = weights[x, y] * distances[solution[x], solution[y]];
72          alleles[x * solution.Length + y] = new Allele(allele + "/" + repetition, impact);
73        }
[5996]74      }
75
76      return alleles;
77    }
78  }
79}
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