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source: branches/3128_Prediction_Intervals/HeuristicLab.Optimization/3.3/BasicProblems/MultiObjectiveBasicProblem.cs @ 18151

Last change on this file since 18151 was 17180, checked in by swagner, 5 years ago

#2875: Removed years in copyrights

File size: 4.1 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.Linq;
23using HEAL.Attic;
24using HeuristicLab.Common;
25using HeuristicLab.Core;
26using HeuristicLab.Data;
27using HeuristicLab.Parameters;
28
29namespace HeuristicLab.Optimization {
30  [StorableType("6F2EC371-0309-4848-B7B1-C9B9C7E3436F")]
31  public abstract class MultiObjectiveBasicProblem<TEncoding> : BasicProblem<TEncoding, MultiObjectiveEvaluator>, IMultiObjectiveHeuristicOptimizationProblem, IMultiObjectiveProblemDefinition
32  where TEncoding : class, IEncoding {
33    [StorableConstructor]
34    protected MultiObjectiveBasicProblem(StorableConstructorFlag _) : base(_) { }
35
36    protected MultiObjectiveBasicProblem(MultiObjectiveBasicProblem<TEncoding> original, Cloner cloner)
37      : base(original, cloner) {
38      ParameterizeOperators();
39    }
40
41    protected MultiObjectiveBasicProblem()
42      : base() {
43      Parameters.Add(new ValueParameter<BoolArray>("Maximization", "Set to false if the problem should be minimized.", (BoolArray)new BoolArray(Maximization).AsReadOnly()));
44
45      Operators.Add(Evaluator);
46      Operators.Add(new MultiObjectiveAnalyzer());
47
48      ParameterizeOperators();
49    }
50
51    [StorableHook(HookType.AfterDeserialization)]
52    private void AfterDeserialization() {
53      ParameterizeOperators();
54    }
55
56    public abstract bool[] Maximization { get; }
57    public abstract double[] Evaluate(Individual individual, IRandom random);
58    public virtual void Analyze(Individual[] individuals, double[][] qualities, ResultCollection results, IRandom random) { }
59   
60    protected override void OnOperatorsChanged() {
61      if (Encoding != null) {
62        PruneSingleObjectiveOperators(Encoding);
63        var multiEncoding = Encoding as MultiEncoding;
64        if (multiEncoding != null) {
65          foreach (var encoding in multiEncoding.Encodings.ToList()) {
66            PruneSingleObjectiveOperators(encoding);
67          }
68        }
69      }
70      base.OnOperatorsChanged();
71    }
72
73    private void PruneSingleObjectiveOperators(IEncoding encoding) {
74      if (encoding != null && encoding.Operators.Any(x => x is ISingleObjectiveOperator && !(x is IMultiObjectiveOperator)))
75        encoding.Operators = encoding.Operators.Where(x => !(x is ISingleObjectiveOperator) || x is IMultiObjectiveOperator).ToList();
76
77      foreach (var multiOp in Encoding.Operators.OfType<IMultiOperator>()) {
78        foreach (var soOp in multiOp.Operators.Where(x => x is ISingleObjectiveOperator).ToList()) {
79          multiOp.RemoveOperator(soOp);
80        }
81      }
82    }
83
84    protected override void OnEvaluatorChanged() {
85      base.OnEvaluatorChanged();
86      ParameterizeOperators();
87    }
88
89    private void ParameterizeOperators() {
90      foreach (var op in Operators.OfType<IMultiObjectiveEvaluationOperator>())
91        op.EvaluateFunc = Evaluate;
92      foreach (var op in Operators.OfType<IMultiObjectiveAnalysisOperator>())
93        op.AnalyzeAction = Analyze;
94    }
95
96
97    #region IMultiObjectiveHeuristicOptimizationProblem Members
98    IParameter IMultiObjectiveHeuristicOptimizationProblem.MaximizationParameter {
99      get { return Parameters["Maximization"]; }
100    }
101    IMultiObjectiveEvaluator IMultiObjectiveHeuristicOptimizationProblem.Evaluator {
102      get { return Evaluator; }
103    }
104    #endregion
105  }
106}
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