[13672] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[17181] | 3 | * Copyright (C) Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[13672] | 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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[14090] | 22 | using System;
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[13672] | 23 | using System.Collections.Generic;
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[14030] | 24 | using System.Linq;
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[13672] | 25 | using HeuristicLab.Common;
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[13725] | 26 | using HeuristicLab.Core;
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[13672] | 27 | using HeuristicLab.Data;
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| 28 | using HeuristicLab.Optimization;
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[13725] | 29 | using HeuristicLab.Parameters;
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[17097] | 30 | using HEAL.Attic;
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[13672] | 31 |
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[14111] | 32 | namespace HeuristicLab.Problems.TestFunctions.MultiObjective {
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[17097] | 33 | [StorableType("13D363E4-76FF-4A5A-9B2C-767D9E880E4B")]
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[14044] | 34 | [Item("HypervolumeAnalyzer", "Computes the enclosed Hypervolume between the current front and a given reference Point")]
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[13988] | 35 | public class HypervolumeAnalyzer : MOTFAnalyzer {
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[14044] | 36 |
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[14092] | 37 | public ILookupParameter<DoubleArray> ReferencePointParameter {
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| 38 | get { return (ILookupParameter<DoubleArray>)Parameters["ReferencePoint"]; }
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| 39 | }
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[14097] | 40 | public IResultParameter<DoubleValue> HypervolumeResultParameter {
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| 41 | get { return (IResultParameter<DoubleValue>)Parameters["Hypervolume"]; }
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| 42 | }
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| 43 | public IResultParameter<DoubleValue> BestKnownHypervolumeResultParameter {
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| 44 | get { return (IResultParameter<DoubleValue>)Parameters["Best known hypervolume"]; }
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| 45 | }
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| 46 | public IResultParameter<DoubleValue> HypervolumeDistanceResultParameter {
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| 47 | get { return (IResultParameter<DoubleValue>)Parameters["Absolute Distance to BestKnownHypervolume"]; }
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| 48 | }
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[14092] | 49 |
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[14097] | 50 |
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[13988] | 51 | [StorableConstructor]
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[17097] | 52 | protected HypervolumeAnalyzer(StorableConstructorFlag _) : base(_) {
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[14092] | 53 | }
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[13672] | 54 |
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[14044] | 55 | protected HypervolumeAnalyzer(HypervolumeAnalyzer original, Cloner cloner)
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| 56 | : base(original, cloner) {
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[13988] | 57 | }
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[14044] | 58 | public override IDeepCloneable Clone(Cloner cloner) {
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| 59 | return new HypervolumeAnalyzer(this, cloner);
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[13988] | 60 | }
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[13725] | 61 |
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[14092] | 62 | public HypervolumeAnalyzer() {
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| 63 | Parameters.Add(new LookupParameter<DoubleArray>("ReferencePoint", "The reference point for hypervolume calculation"));
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[14097] | 64 | Parameters.Add(new ResultParameter<DoubleValue>("Hypervolume", "The hypervolume of the current generation"));
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| 65 | Parameters.Add(new ResultParameter<DoubleValue>("Best known hypervolume", "The optimal hypervolume"));
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| 66 | Parameters.Add(new ResultParameter<DoubleValue>("Absolute Distance to BestKnownHypervolume", "The difference between the best known and the current hypervolume"));
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| 67 | HypervolumeResultParameter.DefaultValue = new DoubleValue(0);
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| 68 | BestKnownHypervolumeResultParameter.DefaultValue = new DoubleValue(0);
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| 69 | HypervolumeDistanceResultParameter.DefaultValue = new DoubleValue(0);
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| 70 |
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| 71 |
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[14092] | 72 | }
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[13725] | 73 |
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[14044] | 74 | public override IOperation Apply() {
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| 75 | var qualities = QualitiesParameter.ActualValue;
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| 76 | var testFunction = TestFunctionParameter.ActualValue;
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[13988] | 77 | int objectives = qualities[0].Length;
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[14092] | 78 | var referencePoint = ReferencePointParameter.ActualValue;
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[13672] | 79 |
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[14097] | 80 | double best = BestKnownHypervolumeResultParameter.ActualValue.Value;
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| 81 | if (referencePoint.SequenceEqual(testFunction.ReferencePoint(objectives))) {
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| 82 | best = Math.Max(best, testFunction.OptimalHypervolume(objectives));
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[13988] | 83 | }
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[13672] | 84 |
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[14081] | 85 | IEnumerable<double[]> front = NonDominatedSelect.SelectNonDominatedVectors(qualities.Select(q => q.ToArray()), testFunction.Maximization(objectives), true);
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[14044] | 86 |
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[14092] | 87 | double hv = Hypervolume.Calculate(front, referencePoint.ToArray(), testFunction.Maximization(objectives));
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[14044] | 88 |
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[14108] | 89 | if (hv > best) {
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[14044] | 90 | best = hv;
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[13988] | 91 | }
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[13672] | 92 |
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[14097] | 93 | HypervolumeResultParameter.ActualValue.Value = hv;
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| 94 | BestKnownHypervolumeResultParameter.ActualValue.Value = best;
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| 95 | HypervolumeDistanceResultParameter.ActualValue.Value = best - hv;
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[13936] | 96 |
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[14044] | 97 | return base.Apply();
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[13672] | 98 | }
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[14044] | 99 |
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[13988] | 100 | }
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[13672] | 101 | }
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