Free cookie consent management tool by TermsFeed Policy Generator

source: branches/CEDMA-Exporter-715/sources/HeuristicLab.Logging/3.2/BestAverageWorstQualityCalculator.cs @ 2319

Last change on this file since 2319 was 1530, checked in by gkronber, 16 years ago

Moved source files of plugins Hive ... Visualization.Test into version-specific sub-folders. #576

File size: 4.1 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2008 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;
23using System.Collections.Generic;
24using System.Text;
25using HeuristicLab.Core;
26using HeuristicLab.Data;
27using HeuristicLab.Operators;
28
29namespace HeuristicLab.Logging {
30  /// <summary>
31  /// Captures the best, the average and the worst quality of the current population.
32  /// </summary>
33  public class BestAverageWorstQualityCalculator : OperatorBase {
34    /// <inheritdoc select="summary"/>
35    public override string Description {
36      get { return @"TODO\r\nOperator description still missing ..."; }
37    }
38
39    /// <summary>
40    /// Initializes a new instance of <see cref="BestAverageWorstQualityCalculator"/> with five variable
41    /// infos (<c>Quality</c>, <c>Maximization</c>, <c>BestQuality</c>, <c>AverageQuality</c>
42    /// and <c>WorstQuality</c>).
43    /// </summary>
44    public BestAverageWorstQualityCalculator()
45      : base() {
46      AddVariableInfo(new VariableInfo("Quality", "Quality value of a solution", typeof(DoubleData), VariableKind.In));
47      AddVariableInfo(new VariableInfo("Maximization", "Maximization problem", typeof(BoolData), VariableKind.In));
48      AddVariableInfo(new VariableInfo("BestQuality", "Quality value of best solution", typeof(DoubleData), VariableKind.New | VariableKind.Out));
49      AddVariableInfo(new VariableInfo("AverageQuality", "Average quality value", typeof(DoubleData), VariableKind.New | VariableKind.Out));
50      AddVariableInfo(new VariableInfo("WorstQuality", "Quality value of worst solution", typeof(DoubleData), VariableKind.New | VariableKind.Out));
51    }
52
53    /// <summary>
54    /// Captures the best, the average and the worst quality of the current population.
55    /// </summary>
56    /// <param name="scope">The scope whose population to test and where to inject the captured values.</param>
57    /// <returns><c>null</c>.</returns>
58    public override IOperation Apply(IScope scope) {
59      double[] qualities = new double[scope.SubScopes.Count];
60
61      for (int i = 0; i < scope.SubScopes.Count; i++)
62        qualities[i] = scope.SubScopes[i].GetVariableValue<DoubleData>("Quality", false).Data;
63
64      double worst = qualities[0];
65      double best = qualities[0];
66      double average = qualities[0];
67      for (int i = 1; i < qualities.Length; i++) {
68        if (qualities[i] < worst) worst = qualities[i];
69        if (qualities[i] > best) best = qualities[i];
70        average += qualities[i];
71      }
72      average = average / qualities.Length;
73
74      if (!GetVariableValue<BoolData>("Maximization", scope, true).Data) {
75        double temp = worst;
76        worst = best;
77        best = temp;
78      }
79
80      SetValue(GetVariableInfo("BestQuality"), best, scope);
81      SetValue(GetVariableInfo("AverageQuality"), average, scope);
82      SetValue(GetVariableInfo("WorstQuality"), worst, scope);
83
84      return null;
85    }
86
87    private void SetValue(IVariableInfo info, double value, IScope scope) {
88      DoubleData data = GetVariableValue<DoubleData>(info.FormalName, scope, false, false);
89      if (data == null) {
90        data = new DoubleData();
91        if (info.Local)
92          AddVariable(new Variable(info.ActualName, data));
93        else
94          scope.AddVariable(new Variable(scope.TranslateName(info.FormalName), data));
95      }
96      data.Data = value;
97    }
98  }
99}
Note: See TracBrowser for help on using the repository browser.