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source: trunk/sources/HeuristicLab.Logging/3.2/QualityLogger.cs @ 1530

Last change on this file since 1530 was 1530, checked in by gkronber, 15 years ago

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

File size: 3.2 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  /// Logs the quality (best, average, worst) of a solution.
32  /// </summary>
33  public class QualityLogger : 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="QualityLogger"/> with two variable infos
41    /// (<c>Quality</c> and <c>QualityLog</c>).
42    /// </summary>
43    public QualityLogger()
44      : base() {
45      AddVariableInfo(new VariableInfo("Quality", "Quality value of a solution", typeof(DoubleData), VariableKind.In));
46      AddVariableInfo(new VariableInfo("QualityLog", "Log of best, average and worst quality values", typeof(Log), VariableKind.In | VariableKind.Out | VariableKind.New));
47    }
48
49    /// <summary>
50    /// Logs the quality (best, average and worst) of a solution.
51    /// </summary>
52    /// <param name="scope">The current scope where to log the quality.</param>
53    /// <returns><c>null</c>.</returns>
54    public override IOperation Apply(IScope scope) {
55      double[] qualities = new double[scope.SubScopes.Count];
56
57      for (int i = 0; i < scope.SubScopes.Count; i++)
58        qualities[i] = scope.SubScopes[i].GetVariableValue<DoubleData>("Quality", false).Data;
59
60      double min = qualities[0];
61      double max = qualities[0];
62      double average = qualities[0];
63      for (int i = 1; i < qualities.Length; i++) {
64        if (qualities[i] < min) min = qualities[i];
65        if (qualities[i] > max) max = qualities[i];
66        average += qualities[i];
67      }
68      average = average / qualities.Length;
69
70      Log log = GetVariableValue<Log>("QualityLog", scope, false, false);
71      if (log == null) {
72        log = new Log(new ItemList());
73        IVariableInfo info = GetVariableInfo("QualityLog");
74        if (info.Local)
75          AddVariable(new Variable(info.ActualName, log));
76        else
77          scope.AddVariable(new Variable(scope.TranslateName(info.FormalName), log));
78      }
79      log.Items.Add(new DoubleArrayData(new double[] { min, average, max } ));
80
81      return null;
82    }
83  }
84}
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