1 | #region License Information
|
---|
2 | /* HeuristicLab
|
---|
3 | * Copyright (C) 2002-2015 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 |
|
---|
22 | using System;
|
---|
23 | using System.Collections.Generic;
|
---|
24 | using System.Linq;
|
---|
25 | using HeuristicLab.Analysis;
|
---|
26 | using HeuristicLab.Collections;
|
---|
27 | using HeuristicLab.Common;
|
---|
28 | using HeuristicLab.Core;
|
---|
29 | using HeuristicLab.Data;
|
---|
30 | using HeuristicLab.Operators;
|
---|
31 | using HeuristicLab.Optimization;
|
---|
32 | using HeuristicLab.Optimization.Operators;
|
---|
33 | using HeuristicLab.Parameters;
|
---|
34 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
|
---|
35 | using HeuristicLab.Random;
|
---|
36 |
|
---|
37 | namespace HeuristicLab.Algorithms.ALPS {
|
---|
38 | [Item("ALPS", "A base class for all ALPS-based algorithms.")]
|
---|
39 | [StorableClass]
|
---|
40 | public abstract class Alps : HeuristicOptimizationEngineAlgorithm, IStorableContent {
|
---|
41 | public string Filename { get; set; }
|
---|
42 |
|
---|
43 | #region Problem Properties
|
---|
44 | public override Type ProblemType {
|
---|
45 | get { return typeof(ISingleObjectiveHeuristicOptimizationProblem); }
|
---|
46 | }
|
---|
47 | public new ISingleObjectiveHeuristicOptimizationProblem Problem {
|
---|
48 | get { return (ISingleObjectiveHeuristicOptimizationProblem)base.Problem; }
|
---|
49 | set { base.Problem = value; }
|
---|
50 | }
|
---|
51 | #endregion
|
---|
52 |
|
---|
53 | #region Parameter Properties
|
---|
54 | private IValueParameter<IntValue> SeedParameter {
|
---|
55 | get { return (IValueParameter<IntValue>)Parameters["Seed"]; }
|
---|
56 | }
|
---|
57 | private IValueParameter<BoolValue> SetSeedRandomlyParameter {
|
---|
58 | get { return (IValueParameter<BoolValue>)Parameters["SetSeedRandomly"]; }
|
---|
59 | }
|
---|
60 | private IFixedValueParameter<MultiAnalyzer> AnalyzerParameter {
|
---|
61 | get { return (IFixedValueParameter<MultiAnalyzer>)Parameters["Analyzer"]; }
|
---|
62 | }
|
---|
63 | private IFixedValueParameter<MultiAnalyzer> LayerAnalyzerParameter {
|
---|
64 | get { return (IFixedValueParameter<MultiAnalyzer>)Parameters["LayerAnalyzer"]; }
|
---|
65 | }
|
---|
66 | private IValueParameter<IntValue> NumberOfLayersParameter {
|
---|
67 | get { return (IValueParameter<IntValue>)Parameters["NumberOfLayers"]; }
|
---|
68 | }
|
---|
69 | private IValueParameter<EnumValue<AgingScheme>> AgingSchemeParameter {
|
---|
70 | get { return (IValueParameter<EnumValue<AgingScheme>>)Parameters["AgingScheme"]; }
|
---|
71 | }
|
---|
72 | private IValueParameter<IntValue> AgeGapParameter {
|
---|
73 | get { return (IValueParameter<IntValue>)Parameters["AgeGap"]; }
|
---|
74 | }
|
---|
75 | private IValueParameter<IntArray> AgeLimitsParameter {
|
---|
76 | get { return (IValueParameter<IntArray>)Parameters["AgeLimits"]; }
|
---|
77 | }
|
---|
78 | private IValueParameter<ReductionOperation> AgeInheritanceParameter {
|
---|
79 | get { return (IValueParameter<ReductionOperation>)Parameters["AgeInheritance"]; }
|
---|
80 | }
|
---|
81 | private IValueParameter<IntValue> MatingPoolRangeParameter {
|
---|
82 | get { return (IValueParameter<IntValue>)Parameters["MatingPoolRange"]; }
|
---|
83 | }
|
---|
84 | private IValueParameter<PercentValue> MatingPoolSelectionPercentageParameter {
|
---|
85 | get { return (IValueLookupParameter<PercentValue>)Parameters["MatingPoolSelectionPercentage"]; }
|
---|
86 | }
|
---|
87 | #endregion
|
---|
88 |
|
---|
89 | #region Properties
|
---|
90 | public IntValue Seed {
|
---|
91 | get { return SeedParameter.Value; }
|
---|
92 | set { SeedParameter.Value = value; }
|
---|
93 | }
|
---|
94 | public BoolValue SetSeedRandomly {
|
---|
95 | get { return SetSeedRandomlyParameter.Value; }
|
---|
96 | set { SetSeedRandomlyParameter.Value = value; }
|
---|
97 | }
|
---|
98 | public MultiAnalyzer Analyzer {
|
---|
99 | get { return AnalyzerParameter.Value; }
|
---|
100 | }
|
---|
101 | public MultiAnalyzer LayerAnalyzer {
|
---|
102 | get { return LayerAnalyzerParameter.Value; }
|
---|
103 | }
|
---|
104 | public IntValue NumberOfLayers {
|
---|
105 | get { return NumberOfLayersParameter.Value; }
|
---|
106 | set { NumberOfLayersParameter.Value = value; }
|
---|
107 | }
|
---|
108 | public EnumValue<AgingScheme> AgingScheme {
|
---|
109 | get { return AgingSchemeParameter.Value; }
|
---|
110 | set { AgingSchemeParameter.Value = value; }
|
---|
111 | }
|
---|
112 | public IntValue AgeGap {
|
---|
113 | get { return AgeGapParameter.Value; }
|
---|
114 | set { AgeGapParameter.Value = value; }
|
---|
115 | }
|
---|
116 | public IntArray AgeLimits {
|
---|
117 | get { return AgeLimitsParameter.Value; }
|
---|
118 | set { AgeLimitsParameter.Value = value; }
|
---|
119 | }
|
---|
120 | public ReductionOperation AgeInheritance {
|
---|
121 | get { return AgeInheritanceParameter.Value; }
|
---|
122 | set { AgeInheritanceParameter.Value = value; }
|
---|
123 | }
|
---|
124 | public IntValue MatingPoolRange {
|
---|
125 | get { return MatingPoolRangeParameter.Value; }
|
---|
126 | set { MatingPoolRangeParameter.Value = value; }
|
---|
127 | }
|
---|
128 | public PercentValue MatingPoolSelectionPercentage {
|
---|
129 | get { return MatingPoolSelectionPercentageParameter.Value; }
|
---|
130 | set { MatingPoolSelectionPercentageParameter.Value = value; }
|
---|
131 | }
|
---|
132 | #endregion
|
---|
133 |
|
---|
134 | #region Helper Properties
|
---|
135 | protected RandomCreator GlobalRandomCreator {
|
---|
136 | get { return (RandomCreator)OperatorGraph.InitialOperator; }
|
---|
137 | }
|
---|
138 | protected SolutionsCreator SolutionsCreator {
|
---|
139 | get { return OperatorGraph.Iterate().OfType<SolutionsCreator>().First(); }
|
---|
140 | }
|
---|
141 | #endregion
|
---|
142 |
|
---|
143 | #region Preconfigured Analyzers
|
---|
144 | [Storable]
|
---|
145 | private BestAverageWorstQualityAnalyzer qualityAnalyzer;
|
---|
146 | [Storable]
|
---|
147 | private BestAverageWorstQualityAnalyzer layerQualityAnalyzer;
|
---|
148 | #endregion
|
---|
149 |
|
---|
150 | [StorableConstructor]
|
---|
151 | protected Alps(bool deserializing)
|
---|
152 | : base(deserializing) { }
|
---|
153 | protected Alps(Alps original, Cloner cloner)
|
---|
154 | : base(original, cloner) {
|
---|
155 | qualityAnalyzer = cloner.Clone(original.qualityAnalyzer);
|
---|
156 | layerQualityAnalyzer = cloner.Clone(original.layerQualityAnalyzer);
|
---|
157 | Initialize();
|
---|
158 | }
|
---|
159 |
|
---|
160 | protected Alps()
|
---|
161 | : base() {
|
---|
162 | Parameters.Add(new ValueParameter<IntValue>("Seed", "The random seed used to initialize the new pseudo random number generator.", new IntValue(0)));
|
---|
163 | Parameters.Add(new ValueParameter<BoolValue>("SetSeedRandomly", "True if the random seed should be set to a random value, otherwise false.", new BoolValue(true)));
|
---|
164 | Parameters.Add(new FixedValueParameter<MultiAnalyzer>("Analyzer", "The operator used to analyze the islands.", new MultiAnalyzer()));
|
---|
165 | Parameters.Add(new FixedValueParameter<MultiAnalyzer>("LayerAnalyzer", "The operator used to analyze each layer.", new MultiAnalyzer()));
|
---|
166 | Parameters.Add(new ValueParameter<IntValue>("NumberOfLayers", "The number of layers.", new IntValue(10)));
|
---|
167 | Parameters.Add(new ValueParameter<EnumValue<AgingScheme>>("AgingScheme", "The aging scheme for setting the age-limits for the layers.", new EnumValue<AgingScheme>(ALPS.AgingScheme.Polynomial)));
|
---|
168 | Parameters.Add(new ValueParameter<IntValue>("AgeGap", "The frequency of reseeding the lowest layer and scaling factor for the age-limits for the layers", new IntValue(20)));
|
---|
169 | Parameters.Add(new ValueParameter<IntArray>("AgeLimits", new IntArray(new int[0])) { Hidden = true });
|
---|
170 | Parameters.Add(new ValueParameter<ReductionOperation>("AgeInheritance", "The operator for determining the age of an offspring based the parents' age.", new ReductionOperation(ReductionOperations.Max)) { Hidden = true });
|
---|
171 | Parameters.Add(new ValueParameter<IntValue>("MatingPoolRange", "The range of layers used for creating a mating pool. (1 = current + previous layer)", new IntValue(1)) { Hidden = true });
|
---|
172 | Parameters.Add(new ValueParameter<PercentValue>("MatingPoolSelectionPercentage", "Percentage of the previous layers used for creating a mating pool.", new PercentValue(1.0, restrictToUnitInterval: true)) { Hidden = true });
|
---|
173 |
|
---|
174 | qualityAnalyzer = new BestAverageWorstQualityAnalyzer();
|
---|
175 | layerQualityAnalyzer = new BestAverageWorstQualityAnalyzer();
|
---|
176 |
|
---|
177 | // Create Operator Graph
|
---|
178 |
|
---|
179 | RecalculateAgeLimits();
|
---|
180 |
|
---|
181 | ParameterizeAnalyzers();
|
---|
182 | UpdateAnalyzers();
|
---|
183 |
|
---|
184 | Initialize();
|
---|
185 | }
|
---|
186 |
|
---|
187 | public override void Prepare() {
|
---|
188 | if (Problem != null)
|
---|
189 | base.Prepare();
|
---|
190 | }
|
---|
191 |
|
---|
192 | #region Events
|
---|
193 | protected override void OnProblemChanged() {
|
---|
194 | base.OnProblemChanged();
|
---|
195 | ParameterizeStochasticOperator(Problem.SolutionCreator);
|
---|
196 | ParameterizeStochasticOperatorForLayer(Problem.Evaluator);
|
---|
197 | foreach (var @operator in Problem.Operators.OfType<IOperator>())
|
---|
198 | ParameterizeStochasticOperator(@operator);
|
---|
199 | ParameterizeSolutionsCreator();
|
---|
200 | ParameterizeAnalyzers();
|
---|
201 | UpdateAnalyzers();
|
---|
202 | Problem.Evaluator.QualityParameter.ActualNameChanged += Evaluator_QualityParameter_ActualNameChanged;
|
---|
203 | }
|
---|
204 | protected override void Problem_SolutionCreatorChanged(object sender, EventArgs e) {
|
---|
205 | base.Problem_SolutionCreatorChanged(sender, e);
|
---|
206 | ParameterizeStochasticOperator(Problem.SolutionCreator);
|
---|
207 | ParameterizeSolutionsCreator();
|
---|
208 | }
|
---|
209 | protected override void Problem_EvaluatorChanged(object sender, EventArgs e) {
|
---|
210 | base.Problem_EvaluatorChanged(sender, e);
|
---|
211 | ParameterizeStochasticOperatorForLayer(Problem.Evaluator);
|
---|
212 | ParameterizeSolutionsCreator();
|
---|
213 | ParameterizeAnalyzers();
|
---|
214 | Problem.Evaluator.QualityParameter.ActualNameChanged += Evaluator_QualityParameter_ActualNameChanged;
|
---|
215 | }
|
---|
216 |
|
---|
217 | protected override void Problem_OperatorsChanged(object sender, EventArgs e) {
|
---|
218 | foreach (var @operator in Problem.Operators.OfType<IOperator>())
|
---|
219 | ParameterizeStochasticOperator(@operator);
|
---|
220 | UpdateAnalyzers();
|
---|
221 | base.Problem_OperatorsChanged(sender, e);
|
---|
222 | }
|
---|
223 | protected virtual void Evaluator_QualityParameter_ActualNameChanged(object sender, EventArgs e) {
|
---|
224 | ParameterizeAnalyzers();
|
---|
225 | }
|
---|
226 |
|
---|
227 | private void AgeGapParameter_ValueChanged(object sender, EventArgs e) {
|
---|
228 | AgeGap.ValueChanged += AgeGap_ValueChanged;
|
---|
229 | RecalculateAgeLimits();
|
---|
230 | }
|
---|
231 | private void AgeGap_ValueChanged(object sender, EventArgs e) {
|
---|
232 | RecalculateAgeLimits();
|
---|
233 | }
|
---|
234 | private void AgingSchemeParameter_ValueChanged(object sender, EventArgs e) {
|
---|
235 | AgingScheme.ValueChanged += AgingScheme_ValueChanged;
|
---|
236 | RecalculateAgeLimits();
|
---|
237 | }
|
---|
238 | private void AgingScheme_ValueChanged(object sender, EventArgs e) {
|
---|
239 | RecalculateAgeLimits();
|
---|
240 | }
|
---|
241 | private void NumberOfLayersParameter_ValueChanged(object sender, EventArgs e) {
|
---|
242 | NumberOfLayers.ValueChanged += NumberOfLayers_ValueChanged;
|
---|
243 | RecalculateAgeLimits();
|
---|
244 | }
|
---|
245 | private void NumberOfLayers_ValueChanged(object sender, EventArgs e) {
|
---|
246 | RecalculateAgeLimits();
|
---|
247 | }
|
---|
248 | private void AnalyzerOperators_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IndexedItem<IAnalyzer>> e) {
|
---|
249 | foreach (var analyzer in e.Items) {
|
---|
250 | foreach (var parameter in analyzer.Value.Parameters.OfType<IScopeTreeLookupParameter>()) {
|
---|
251 | parameter.Depth = 2;
|
---|
252 | }
|
---|
253 | }
|
---|
254 | }
|
---|
255 | private void LayerAnalyzerOperators_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IndexedItem<IAnalyzer>> e) {
|
---|
256 | foreach (var analyzer in e.Items) {
|
---|
257 | IParameter resultParameter;
|
---|
258 | if (analyzer.Value.Parameters.TryGetValue("Results", out resultParameter)) {
|
---|
259 | var lookupParameter = resultParameter as ILookupParameter;
|
---|
260 | if (lookupParameter != null)
|
---|
261 | lookupParameter.ActualName = "LayerResults";
|
---|
262 | }
|
---|
263 | foreach (var parameter in analyzer.Value.Parameters.OfType<IScopeTreeLookupParameter>()) {
|
---|
264 | parameter.Depth = 1;
|
---|
265 | }
|
---|
266 | }
|
---|
267 | }
|
---|
268 | #endregion
|
---|
269 |
|
---|
270 | #region Parameterization
|
---|
271 | private void Initialize() {
|
---|
272 | if (Problem != null)
|
---|
273 | Problem.Evaluator.QualityParameter.ActualNameChanged += Evaluator_QualityParameter_ActualNameChanged;
|
---|
274 | AgeGapParameter.ValueChanged += AgeGapParameter_ValueChanged;
|
---|
275 | AgeGap.ValueChanged += AgeGap_ValueChanged;
|
---|
276 | AgingSchemeParameter.ValueChanged += AgingSchemeParameter_ValueChanged;
|
---|
277 | AgingScheme.ValueChanged += AgingScheme_ValueChanged;
|
---|
278 | NumberOfLayersParameter.ValueChanged += NumberOfLayersParameter_ValueChanged;
|
---|
279 | NumberOfLayers.ValueChanged += NumberOfLayers_ValueChanged;
|
---|
280 | Analyzer.Operators.ItemsAdded += AnalyzerOperators_ItemsAdded;
|
---|
281 | LayerAnalyzer.Operators.ItemsAdded += LayerAnalyzerOperators_ItemsAdded;
|
---|
282 | }
|
---|
283 | private void ParameterizeSolutionsCreator() {
|
---|
284 | SolutionsCreator.EvaluatorParameter.ActualName = Problem.EvaluatorParameter.Name;
|
---|
285 | SolutionsCreator.SolutionCreatorParameter.ActualName = Problem.SolutionCreatorParameter.Name;
|
---|
286 | }
|
---|
287 | private void ParameterizeAnalyzers() {
|
---|
288 | qualityAnalyzer.ResultsParameter.ActualName = "Results";
|
---|
289 | qualityAnalyzer.ResultsParameter.Hidden = true;
|
---|
290 | qualityAnalyzer.QualityParameter.Depth = 2;
|
---|
291 | layerQualityAnalyzer.ResultsParameter.ActualName = "Results";
|
---|
292 | layerQualityAnalyzer.ResultsParameter.Hidden = true;
|
---|
293 | layerQualityAnalyzer.QualityParameter.Depth = 1;
|
---|
294 | if (Problem != null) {
|
---|
295 | qualityAnalyzer.MaximizationParameter.ActualName = Problem.MaximizationParameter.Name;
|
---|
296 | qualityAnalyzer.MaximizationParameter.Hidden = true;
|
---|
297 | qualityAnalyzer.QualityParameter.ActualName = Problem.Evaluator.QualityParameter.ActualName;
|
---|
298 | qualityAnalyzer.QualityParameter.Hidden = true;
|
---|
299 | qualityAnalyzer.BestKnownQualityParameter.ActualName = Problem.BestKnownQualityParameter.Name;
|
---|
300 | qualityAnalyzer.BestKnownQualityParameter.Hidden = true;
|
---|
301 | layerQualityAnalyzer.MaximizationParameter.ActualName = Problem.MaximizationParameter.Name;
|
---|
302 | layerQualityAnalyzer.MaximizationParameter.Hidden = true;
|
---|
303 | layerQualityAnalyzer.QualityParameter.ActualName = Problem.Evaluator.QualityParameter.ActualName;
|
---|
304 | layerQualityAnalyzer.QualityParameter.Hidden = true;
|
---|
305 | layerQualityAnalyzer.BestKnownQualityParameter.ActualName = Problem.BestKnownQualityParameter.Name;
|
---|
306 | layerQualityAnalyzer.BestKnownQualityParameter.Hidden = true;
|
---|
307 | }
|
---|
308 | }
|
---|
309 | protected virtual void ParameterizeStochasticOperator(IOperator @operator) {
|
---|
310 | var stochasticOperator = @operator as IStochasticOperator;
|
---|
311 | if (stochasticOperator != null) {
|
---|
312 | stochasticOperator.RandomParameter.ActualName = "GlobalRandom";
|
---|
313 | stochasticOperator.RandomParameter.Hidden = true;
|
---|
314 | }
|
---|
315 | }
|
---|
316 | protected virtual void ParameterizeStochasticOperatorForLayer(IOperator @operator) {
|
---|
317 | var stochasticOperator = @operator as IStochasticOperator;
|
---|
318 | if (stochasticOperator != null) {
|
---|
319 | stochasticOperator.RandomParameter.ActualName = "LocalRandom";
|
---|
320 | stochasticOperator.RandomParameter.Hidden = true;
|
---|
321 | }
|
---|
322 | }
|
---|
323 | #endregion
|
---|
324 |
|
---|
325 | #region Updates
|
---|
326 | private void UpdateAnalyzers() {
|
---|
327 | Analyzer.Operators.Clear();
|
---|
328 | LayerAnalyzer.Operators.Clear();
|
---|
329 |
|
---|
330 | Analyzer.Operators.Add(qualityAnalyzer, qualityAnalyzer.EnabledByDefault);
|
---|
331 | LayerAnalyzer.Operators.Add(layerQualityAnalyzer, layerQualityAnalyzer.EnabledByDefault);
|
---|
332 |
|
---|
333 | if (Problem != null) {
|
---|
334 | foreach (var analyzer in Problem.Operators.OfType<IAnalyzer>()) {
|
---|
335 | Analyzer.Operators.Add(analyzer, analyzer.EnabledByDefault);
|
---|
336 | }
|
---|
337 | }
|
---|
338 | }
|
---|
339 | #endregion
|
---|
340 |
|
---|
341 | private void RecalculateAgeLimits() {
|
---|
342 | var scheme = AgingScheme.Value;
|
---|
343 | int ageGap = AgeGap.Value;
|
---|
344 | int numberOfLayers = NumberOfLayers.Value;
|
---|
345 | AgeLimits = AgingSchemeCalculator.CalculateAgeLimits(scheme, ageGap, numberOfLayers);
|
---|
346 | }
|
---|
347 | }
|
---|
348 | } |
---|