[7789] | 1 | #region License Information
|
---|
| 2 | /* HeuristicLab
|
---|
[11185] | 3 | * Copyright (C) 2002-2014 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
|
---|
[7789] | 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 |
|
---|
| 22 | using System.Linq;
|
---|
| 23 | using HeuristicLab.Common;
|
---|
| 24 | using HeuristicLab.Core;
|
---|
| 25 | using HeuristicLab.Data;
|
---|
| 26 | using HeuristicLab.Operators;
|
---|
| 27 | using HeuristicLab.Parameters;
|
---|
| 28 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
|
---|
| 29 |
|
---|
| 30 | namespace HeuristicLab.Algorithms.ScatterSearch {
|
---|
| 31 | /// <summary>
|
---|
| 32 | /// An operator that updates the reference set and rebuilds the population.
|
---|
| 33 | /// </summary>
|
---|
| 34 | [Item("PopulationRebuildMethod", "An operator that updates the reference set and rebuilds the population.")]
|
---|
| 35 | [StorableClass]
|
---|
[8319] | 36 | public sealed class PopulationRebuildMethod : SingleSuccessorOperator {
|
---|
[7789] | 37 | #region Parameter properties
|
---|
| 38 | public ScopeParameter CurrentScopeParameter {
|
---|
| 39 | get { return (ScopeParameter)Parameters["CurrentScope"]; }
|
---|
| 40 | }
|
---|
| 41 | public IValueLookupParameter<BoolValue> MaximizationParameter {
|
---|
| 42 | get { return (IValueLookupParameter<BoolValue>)Parameters["Maximization"]; }
|
---|
| 43 | }
|
---|
| 44 | public IValueLookupParameter<IntValue> NumberOfHighQualitySolutionsParameter {
|
---|
| 45 | get { return (IValueLookupParameter<IntValue>)Parameters["NumberOfHighQualitySolutions"]; }
|
---|
| 46 | }
|
---|
| 47 | public IValueLookupParameter<IItem> QualityParameter {
|
---|
| 48 | get { return (IValueLookupParameter<IItem>)Parameters["Quality"]; }
|
---|
| 49 | }
|
---|
| 50 | public IValueLookupParameter<IntValue> ReferenceSetSizeParameter {
|
---|
| 51 | get { return (IValueLookupParameter<IntValue>)Parameters["ReferenceSetSize"]; }
|
---|
| 52 | }
|
---|
| 53 | #endregion
|
---|
| 54 |
|
---|
| 55 | #region Properties
|
---|
| 56 | private IScope CurrentScope {
|
---|
| 57 | get { return CurrentScopeParameter.ActualValue; }
|
---|
| 58 | }
|
---|
| 59 | private BoolValue Maximization {
|
---|
| 60 | get { return MaximizationParameter.ActualValue; }
|
---|
| 61 | set { MaximizationParameter.ActualValue = value; }
|
---|
| 62 | }
|
---|
| 63 | private IntValue NumberOfHighQualitySolutions {
|
---|
| 64 | get { return NumberOfHighQualitySolutionsParameter.ActualValue; }
|
---|
| 65 | set { NumberOfHighQualitySolutionsParameter.ActualValue = value; }
|
---|
| 66 | }
|
---|
| 67 | private IItem Quality {
|
---|
| 68 | get { return QualityParameter.ActualValue; }
|
---|
| 69 | }
|
---|
| 70 | private IntValue ReferenceSetSize {
|
---|
| 71 | get { return ReferenceSetSizeParameter.ActualValue; }
|
---|
| 72 | set { ReferenceSetSizeParameter.ActualValue = value; }
|
---|
| 73 | }
|
---|
| 74 | #endregion
|
---|
| 75 |
|
---|
| 76 | [StorableConstructor]
|
---|
| 77 | private PopulationRebuildMethod(bool deserializing) : base(deserializing) { }
|
---|
| 78 | private PopulationRebuildMethod(PopulationRebuildMethod original, Cloner cloner) : base(original, cloner) { }
|
---|
| 79 | public PopulationRebuildMethod()
|
---|
| 80 | : base() {
|
---|
| 81 | #region Create parameters
|
---|
[8086] | 82 | Parameters.Add(new ScopeParameter("CurrentScope", "The current scope that contains the population and the reference set."));
|
---|
| 83 | Parameters.Add(new ValueLookupParameter<BoolValue>("Maximization", "True if the problem is a maximization problem, otherwise false."));
|
---|
| 84 | Parameters.Add(new ValueLookupParameter<IntValue>("NumberOfHighQualitySolutions", "The number of high quality solutions in the reference set."));
|
---|
| 85 | Parameters.Add(new ValueLookupParameter<IItem>("Quality", "This parameter is used for name translation only."));
|
---|
| 86 | Parameters.Add(new ValueLookupParameter<IntValue>("ReferenceSetSize", "The size of the reference set."));
|
---|
[7789] | 87 | #endregion
|
---|
| 88 | }
|
---|
| 89 |
|
---|
| 90 | public override IDeepCloneable Clone(Cloner cloner) {
|
---|
| 91 | return new PopulationRebuildMethod(this, cloner);
|
---|
| 92 | }
|
---|
| 93 |
|
---|
| 94 | public override IOperation Apply() {
|
---|
| 95 | IScope populationScope = CurrentScope.SubScopes[0];
|
---|
| 96 | IScope referenceSetScope = CurrentScope.SubScopes[1];
|
---|
| 97 | var orderedReferenceSet = Maximization.Value ? referenceSetScope.SubScopes.OrderByDescending(r => r.Variables[QualityParameter.ActualName].Value) :
|
---|
| 98 | referenceSetScope.SubScopes.OrderBy(r => r.Variables[QualityParameter.ActualName].Value);
|
---|
| 99 | referenceSetScope.SubScopes.Replace(orderedReferenceSet.Take(NumberOfHighQualitySolutions.Value).ToList());
|
---|
| 100 | populationScope.SubScopes.Clear();
|
---|
| 101 | return base.Apply();
|
---|
| 102 | }
|
---|
| 103 | }
|
---|
| 104 | }
|
---|