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source: branches/2521_ProblemRefactoring/HeuristicLab.Optimization/3.3/Problems/MultiObjectiveHeuristicOptimizationProblem.cs @ 17317

Last change on this file since 17317 was 17317, checked in by abeham, 4 years ago

#2521: refactored multi-objective problems' maximization

  • Add ForceValue method to IValueParameter to perform changes even when it is read-only
  • Add MaximizationChanged event handler
File size: 3.4 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 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 HEAL.Attic;
24using HeuristicLab.Common;
25using HeuristicLab.Core;
26using HeuristicLab.Data;
27using HeuristicLab.Parameters;
28
29namespace HeuristicLab.Optimization {
30  [Item("Multi-Objective Heuristic Optimization Problem", "A base class for multi-objective heuristic optimization problems.")]
31  [StorableType("C46643E3-7144-4884-A30A-5329BD80DC4E")]
32  public abstract class MultiObjectiveHeuristicOptimizationProblem<T, U> : HeuristicOptimizationProblem<T, U>, IMultiObjectiveHeuristicOptimizationProblem
33    where T : class, IMultiObjectiveEvaluator
34    where U : class, ISolutionCreator {
35    private const string MaximizationParameterName = "Maximization";
36
37    [StorableConstructor]
38    protected MultiObjectiveHeuristicOptimizationProblem(StorableConstructorFlag _) : base(_) { }
39    protected MultiObjectiveHeuristicOptimizationProblem(MultiObjectiveHeuristicOptimizationProblem<T, U> original, Cloner cloner)
40      : base(original, cloner) {
41      RegisterEventHandlers();
42    }
43    protected MultiObjectiveHeuristicOptimizationProblem()
44      : base() {
45      Parameters.Add(new ValueParameter<BoolArray>(MaximizationParameterName, "Determines for each objective whether it should be maximized or minimized."));
46
47      RegisterEventHandlers();
48    }
49
50    protected MultiObjectiveHeuristicOptimizationProblem(T evaluator, U solutionCreator)
51      : base(evaluator, solutionCreator) {
52      Parameters.Add(new ValueParameter<BoolArray>(MaximizationParameterName, "Determines for each objective whether it should be maximized or minimized."));
53
54      RegisterEventHandlers();
55    }
56
57    private void RegisterEventHandlers() {
58      MaximizationParameter.ValueChanged += MaximizationParameterOnValueChanged;
59    }
60
61    private void MaximizationParameterOnValueChanged(object sender, EventArgs e) {
62      OnMaximizationChanged();
63    }
64
65    public ValueParameter<BoolArray> MaximizationParameter {
66      get { return (ValueParameter<BoolArray>)Parameters[MaximizationParameterName]; }
67    }
68    IParameter IMultiObjectiveHeuristicOptimizationProblem.MaximizationParameter {
69      get { return MaximizationParameter; }
70    }
71    public BoolArray Maximization {
72      get { return MaximizationParameter.Value; }
73      protected set { MaximizationParameter.Value = value; }
74    }
75
76    IMultiObjectiveEvaluator IMultiObjectiveHeuristicOptimizationProblem.Evaluator {
77      get { return Evaluator; }
78    }
79
80    public event EventHandler MaximizationChanged;
81    protected void OnMaximizationChanged() {
82      MaximizationChanged?.Invoke(this, EventArgs.Empty);
83    }
84  }
85}
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