[7789] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[16662] | 3 | * Copyright (C) 2002-2019 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[7789] | 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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| 22 | using System.Collections.Generic;
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| 23 | using System.Linq;
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| 24 | using HeuristicLab.Common;
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| 25 | using HeuristicLab.Core;
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| 26 | using HeuristicLab.Data;
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| 27 | using HeuristicLab.Operators;
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[8086] | 28 | using HeuristicLab.Optimization;
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[7789] | 29 | using HeuristicLab.Parameters;
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[16662] | 30 | using HEAL.Attic;
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[7789] | 31 |
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| 32 | namespace HeuristicLab.Algorithms.ScatterSearch {
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| 33 | /// <summary>
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| 34 | /// An operator that updates the reference set.
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| 35 | /// </summary>
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| 36 | [Item("ReferenceSetUpdateMethod", "An operator that updates the reference set.")]
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[16662] | 37 | [StorableType("478625DC-87BD-4111-98D1-45A9939198C8")]
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[12069] | 38 | public sealed class ReferenceSetUpdateMethod : SingleSuccessorOperator {
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[7789] | 39 | #region Parameter properties
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| 40 | public ScopeParameter CurrentScopeParameter {
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| 41 | get { return (ScopeParameter)Parameters["CurrentScope"]; }
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| 42 | }
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| 43 | public IValueLookupParameter<IntValue> ReferenceSetSizeParameter {
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| 44 | get { return (IValueLookupParameter<IntValue>)Parameters["ReferenceSetSize"]; }
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| 45 | }
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[12069] | 46 | public IValueLookupParameter<ISolutionSimilarityCalculator> SimilarityCalculatorParameter {
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| 47 | get { return (IValueLookupParameter<ISolutionSimilarityCalculator>)Parameters["SimilarityCalculator"]; }
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| 48 | }
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[7789] | 49 | #endregion
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| 50 |
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| 51 | #region Properties
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| 52 | private IScope CurrentScope {
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| 53 | get { return CurrentScopeParameter.ActualValue; }
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| 54 | }
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| 55 | private IntValue ReferenceSetSize {
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| 56 | get { return ReferenceSetSizeParameter.ActualValue; }
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| 57 | }
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| 58 | #endregion
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| 59 |
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| 60 | [StorableConstructor]
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[16662] | 61 | private ReferenceSetUpdateMethod(StorableConstructorFlag _) : base(_) { }
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[12069] | 62 | private ReferenceSetUpdateMethod(ReferenceSetUpdateMethod original, Cloner cloner) : base(original, cloner) { }
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[7789] | 63 | public ReferenceSetUpdateMethod()
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| 64 | : base() {
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| 65 | #region Create parameters
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[8086] | 66 | Parameters.Add(new ScopeParameter("CurrentScope", "The current scope that contains the population and the reference set."));
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| 67 | Parameters.Add(new ValueLookupParameter<IntValue>("ReferenceSetSize", "The size of the reference set."));
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[12069] | 68 | Parameters.Add(new ValueLookupParameter<ISolutionSimilarityCalculator>("SimilarityCalculator", "The similarity calculator that should be used to calculate solution similarity."));
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[7789] | 69 | #endregion
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| 70 | }
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| 71 |
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| 72 | public override IDeepCloneable Clone(Cloner cloner) {
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| 73 | return new ReferenceSetUpdateMethod(this, cloner);
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| 74 | }
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| 75 |
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[12069] | 76 | [StorableHook(HookType.AfterDeserialization)]
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| 77 | private void AfterDeserialization() {
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| 78 | // BackwardsCompatibility3.3
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| 79 | #region Backwards compatible code, remove with 3.4
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| 80 | if (!Parameters.ContainsKey("SimilarityCalculator"))
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| 81 | Parameters.Add(new ValueLookupParameter<ISolutionSimilarityCalculator>("SimilarityCalculator", "The similarity calculator that should be used to calculate solution similarity."));
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| 82 | #endregion
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| 83 | }
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| 84 |
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[7789] | 85 | public override IOperation Apply() {
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[8319] | 86 | var populationSimilarity = new Dictionary<IScope, double>();
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| 87 | var populationScope = CurrentScope.SubScopes[0];
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| 88 | var refSetScope = CurrentScope.SubScopes[1];
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[12069] | 89 | var similarityMatrix = SimilarityCalculatorParameter.ActualValue.CalculateSolutionCrowdSimilarity(populationScope, refSetScope);
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[8319] | 90 | for (int i = 0; i < populationScope.SubScopes.Count; i++) {
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| 91 | populationSimilarity[populationScope.SubScopes[i]] = similarityMatrix[i].Sum();
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[7789] | 92 | }
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| 93 | int numberOfHighQualitySolutions = CurrentScope.SubScopes[1].SubScopes.Count;
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[8319] | 94 | foreach (var entry in populationSimilarity.OrderBy(x => x.Value).Take(ReferenceSetSize.Value - numberOfHighQualitySolutions)) {
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[7789] | 95 | CurrentScope.SubScopes[1].SubScopes.Add(entry.Key);
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| 96 | CurrentScope.SubScopes[0].SubScopes.Remove(entry.Key);
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| 97 | }
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| 98 | return base.Apply();
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| 99 | }
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| 100 | }
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| 101 | }
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