source: branches/2520_PersistenceReintegration/HeuristicLab.Problems.TestFunctions.MultiObjective/3.3/Analyzers/HypervolumeAnalyzer.cs @ 16462

Last change on this file since 16462 was 16462, checked in by jkarder, 2 years ago

#2520: worked on reintegration of new persistence

  • added nuget references to HEAL.Fossil
  • added StorableType attributes to many classes
  • changed signature of StorableConstructors
  • removed some classes in old persistence
  • removed some unnecessary usings
File size: 4.2 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2019 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.Linq;
25using HeuristicLab.Common;
26using HeuristicLab.Core;
27using HeuristicLab.Data;
28using HeuristicLab.Optimization;
29using HeuristicLab.Parameters;
30using HEAL.Fossil;
31
32namespace HeuristicLab.Problems.TestFunctions.MultiObjective {
33  [StorableType("13D363E4-76FF-4A5A-9B2C-767D9E880E4B")]
34  [Item("HypervolumeAnalyzer", "Computes the enclosed Hypervolume between the current front and a given reference Point")]
35  public class HypervolumeAnalyzer : MOTFAnalyzer {
36
37    public ILookupParameter<DoubleArray> ReferencePointParameter {
38      get { return (ILookupParameter<DoubleArray>)Parameters["ReferencePoint"]; }
39    }
40    public IResultParameter<DoubleValue> HypervolumeResultParameter {
41      get { return (IResultParameter<DoubleValue>)Parameters["Hypervolume"]; }
42    }
43    public IResultParameter<DoubleValue> BestKnownHypervolumeResultParameter {
44      get { return (IResultParameter<DoubleValue>)Parameters["Best known hypervolume"]; }
45    }
46    public IResultParameter<DoubleValue> HypervolumeDistanceResultParameter {
47      get { return (IResultParameter<DoubleValue>)Parameters["Absolute Distance to BestKnownHypervolume"]; }
48    }
49
50
51    [StorableConstructor]
52    protected HypervolumeAnalyzer(StorableConstructorFlag _) : base(_) {
53    }
54
55    protected HypervolumeAnalyzer(HypervolumeAnalyzer original, Cloner cloner)
56      : base(original, cloner) {
57    }
58    public override IDeepCloneable Clone(Cloner cloner) {
59      return new HypervolumeAnalyzer(this, cloner);
60    }
61
62    public HypervolumeAnalyzer() {
63      Parameters.Add(new LookupParameter<DoubleArray>("ReferencePoint", "The reference point for hypervolume calculation"));
64      Parameters.Add(new ResultParameter<DoubleValue>("Hypervolume", "The hypervolume of the current generation"));
65      Parameters.Add(new ResultParameter<DoubleValue>("Best known hypervolume", "The optimal hypervolume"));
66      Parameters.Add(new ResultParameter<DoubleValue>("Absolute Distance to BestKnownHypervolume", "The difference between the best known and the current hypervolume"));
67      HypervolumeResultParameter.DefaultValue = new DoubleValue(0);
68      BestKnownHypervolumeResultParameter.DefaultValue = new DoubleValue(0);
69      HypervolumeDistanceResultParameter.DefaultValue = new DoubleValue(0);
70
71
72    }
73
74    public override IOperation Apply() {
75      var qualities = QualitiesParameter.ActualValue;
76      var testFunction = TestFunctionParameter.ActualValue;
77      int objectives = qualities[0].Length;
78      var referencePoint = ReferencePointParameter.ActualValue;
79
80      double best = BestKnownHypervolumeResultParameter.ActualValue.Value;
81      if (referencePoint.SequenceEqual(testFunction.ReferencePoint(objectives))) {
82        best = Math.Max(best, testFunction.OptimalHypervolume(objectives));
83      }
84
85      IEnumerable<double[]> front = NonDominatedSelect.SelectNonDominatedVectors(qualities.Select(q => q.ToArray()), testFunction.Maximization(objectives), true);
86
87      double hv = Hypervolume.Calculate(front, referencePoint.ToArray(), testFunction.Maximization(objectives));
88
89      if (hv > best) {
90        best = hv;
91      }
92
93      HypervolumeResultParameter.ActualValue.Value = hv;
94      BestKnownHypervolumeResultParameter.ActualValue.Value = best;
95      HypervolumeDistanceResultParameter.ActualValue.Value = best - hv;
96
97      return base.Apply();
98    }
99
100  }
101}
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