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source: trunk/sources/HeuristicLab.Problems.TestFunctions/3.3/SingleObjectiveTestFunctionProblem.cs @ 3702

Last change on this file since 3702 was 3685, checked in by swinkler, 14 years ago

Removed "TSP" from test function descriptions. (#934)
File size: 17.7 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2010 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.Collections.ObjectModel;
25using System.Drawing;
26using System.Linq;
27using HeuristicLab.Common;
28using HeuristicLab.Core;
29using HeuristicLab.Data;
30using HeuristicLab.Encodings.RealVectorEncoding;
31using HeuristicLab.Optimization;
32using HeuristicLab.Parameters;
33using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
34using HeuristicLab.PluginInfrastructure;
35using HeuristicLab.Operators;
36using HeuristicLab.Problems.TestFunctions.Analyzers;
37
38namespace HeuristicLab.Problems.TestFunctions {
39  [Item("Single Objective Test Function", "Test function with real valued inputs and a single objective.")]
40  [StorableClass]
41  [Creatable("Problems")]
42  public sealed class SingleObjectiveTestFunctionProblem : ParameterizedNamedItem, ISingleObjectiveProblem {
43    [Storable]
44    private StdDevStrategyVectorCreator strategyVectorCreator;
45    [Storable]
46    private StdDevStrategyVectorCrossover strategyVectorCrossover;
47    [Storable]
48    private StdDevStrategyVectorManipulator strategyVectorManipulator;
49
50    public override Image ItemImage {
51      get { return HeuristicLab.Common.Resources.VS2008ImageLibrary.Type; }
52    }
53
54    #region Parameter Properties
55    public ValueParameter<BoolValue> MaximizationParameter {
56      get { return (ValueParameter<BoolValue>)Parameters["Maximization"]; }
57    }
58    IParameter ISingleObjectiveProblem.MaximizationParameter {
59      get { return MaximizationParameter; }
60    }
61    public ValueParameter<DoubleMatrix> BoundsParameter {
62      get { return (ValueParameter<DoubleMatrix>)Parameters["Bounds"]; }
63    }
64    public ValueParameter<IntValue> ProblemSizeParameter {
65      get { return (ValueParameter<IntValue>)Parameters["ProblemSize"]; }
66    }
67    public ValueParameter<IRealVectorCreator> SolutionCreatorParameter {
68      get { return (ValueParameter<IRealVectorCreator>)Parameters["SolutionCreator"]; }
69    }
70    IParameter IProblem.SolutionCreatorParameter {
71      get { return SolutionCreatorParameter; }
72    }
73    public ValueParameter<ISingleObjectiveTestFunctionProblemEvaluator> EvaluatorParameter {
74      get { return (ValueParameter<ISingleObjectiveTestFunctionProblemEvaluator>)Parameters["Evaluator"]; }
75    }
76    IParameter IProblem.EvaluatorParameter {
77      get { return EvaluatorParameter; }
78    }
79    public OptionalValueParameter<DoubleValue> BestKnownQualityParameter {
80      get { return (OptionalValueParameter<DoubleValue>)Parameters["BestKnownQuality"]; }
81    }
82    IParameter ISingleObjectiveProblem.BestKnownQualityParameter {
83      get { return BestKnownQualityParameter; }
84    }
85    #endregion
86
87    #region Properties
88    public BoolValue Maximization {
89      get { return MaximizationParameter.Value; }
90      set { MaximizationParameter.Value = value; }
91    }
92    public DoubleMatrix Bounds {
93      get { return BoundsParameter.Value; }
94      set { BoundsParameter.Value = value; }
95    }
96    public IntValue ProblemSize {
97      get { return ProblemSizeParameter.Value; }
98      set { ProblemSizeParameter.Value = value; }
99    }
100    public IRealVectorCreator SolutionCreator {
101      get { return SolutionCreatorParameter.Value; }
102      set { SolutionCreatorParameter.Value = value; }
103    }
104    ISolutionCreator IProblem.SolutionCreator {
105      get { return SolutionCreatorParameter.Value; }
106    }
107    public ISingleObjectiveTestFunctionProblemEvaluator Evaluator {
108      get { return EvaluatorParameter.Value; }
109      set { EvaluatorParameter.Value = value; }
110    }
111    ISingleObjectiveEvaluator ISingleObjectiveProblem.Evaluator {
112      get { return EvaluatorParameter.Value; }
113    }
114    IEvaluator IProblem.Evaluator {
115      get { return EvaluatorParameter.Value; }
116    }
117    public DoubleValue BestKnownQuality {
118      get { return BestKnownQualityParameter.Value; }
119      set { BestKnownQualityParameter.Value = value; }
120    }
121    private List<IOperator> operators;
122    public IEnumerable<IOperator> Operators {
123      get { return operators; }
124    }
125    private IEnumerable<IBestSingleObjectiveTestFunctionSolutionAnalyzer> BestSingleObjectiveTestFunctionSolutionAnalyzers {
126      get { return operators.OfType<IBestSingleObjectiveTestFunctionSolutionAnalyzer>(); }
127    }
128    #endregion
129
130    [StorableConstructor]
131    private SingleObjectiveTestFunctionProblem(bool deserializing) : base() { }
132    public SingleObjectiveTestFunctionProblem()
133      : base() {
134      UniformRandomRealVectorCreator creator = new UniformRandomRealVectorCreator();
135      AckleyEvaluator evaluator = new AckleyEvaluator();
136
137      Parameters.Add(new ValueParameter<BoolValue>("Maximization", "Set to false as most test functions are minimization problems.", new BoolValue(evaluator.Maximization)));
138      Parameters.Add(new ValueParameter<DoubleMatrix>("Bounds", "The lower and upper bounds in each dimension.", evaluator.Bounds));
139      Parameters.Add(new ValueParameter<IntValue>("ProblemSize", "The dimension of the problem.", new IntValue(2)));
140      Parameters.Add(new ValueParameter<IRealVectorCreator>("SolutionCreator", "The operator which should be used to create new test function solutions.", creator));
141      Parameters.Add(new ValueParameter<ISingleObjectiveTestFunctionProblemEvaluator>("Evaluator", "The operator which should be used to evaluate test function solutions.", evaluator));
142      Parameters.Add(new OptionalValueParameter<DoubleValue>("BestKnownQuality", "The quality of the best known solution of this test function.", new DoubleValue(evaluator.BestKnownQuality)));
143
144      strategyVectorCreator = new StdDevStrategyVectorCreator();
145      strategyVectorCreator.LengthParameter.ActualName = ProblemSizeParameter.Name;
146      strategyVectorCrossover = new StdDevStrategyVectorCrossover();
147      strategyVectorManipulator = new StdDevStrategyVectorManipulator();
148      strategyVectorManipulator.LearningRateParameter.Value = new DoubleValue(0.5);
149      strategyVectorManipulator.GeneralLearningRateParameter.Value = new DoubleValue(0.5);
150
151      creator.RealVectorParameter.ActualName = "Point";
152      ParameterizeSolutionCreator();
153      ParameterizeEvaluator();
154
155      Initialize();
156    }
157
158    public override IDeepCloneable Clone(Cloner cloner) {
159      SingleObjectiveTestFunctionProblem clone = (SingleObjectiveTestFunctionProblem)base.Clone(cloner);
160      clone.Initialize();
161      return clone;
162    }
163
164    #region Events
165    public event EventHandler SolutionCreatorChanged;
166    private void OnSolutionCreatorChanged() {
167      if (SolutionCreatorChanged != null)
168        SolutionCreatorChanged(this, EventArgs.Empty);
169    }
170    public event EventHandler EvaluatorChanged;
171    private void OnEvaluatorChanged() {
172      if (EvaluatorChanged != null)
173        EvaluatorChanged(this, EventArgs.Empty);
174    }
175    public event EventHandler OperatorsChanged;
176    private void OnOperatorsChanged() {
177      if (OperatorsChanged != null)
178        OperatorsChanged(this, EventArgs.Empty);
179    }
180    private void ProblemSizeParameter_ValueChanged(object sender, EventArgs e) {
181      ProblemSize.ValueChanged += new EventHandler(ProblemSize_ValueChanged);
182      ProblemSize_ValueChanged(null, EventArgs.Empty);
183    }
184    private void ProblemSize_ValueChanged(object sender, EventArgs e) {
185      if (ProblemSize.Value < 1) ProblemSize.Value = 1;
186      ParameterizeSolutionCreator();
187      strategyVectorManipulator.GeneralLearningRateParameter.Value = new DoubleValue(1.0 / Math.Sqrt(2 * ProblemSize.Value));
188      strategyVectorManipulator.LearningRateParameter.Value = new DoubleValue(1.0 / Math.Sqrt(2 * Math.Sqrt(ProblemSize.Value)));
189    }
190    private void SolutionCreatorParameter_ValueChanged(object sender, EventArgs e) {
191      ParameterizeSolutionCreator();
192      ParameterizeAnalyzers();
193      SolutionCreator_RealVectorParameter_ActualNameChanged(null, EventArgs.Empty);
194    }
195    private void SolutionCreator_RealVectorParameter_ActualNameChanged(object sender, EventArgs e) {
196      ParameterizeEvaluator();
197      ParameterizeOperators();
198      ParameterizeAnalyzers();
199    }
200    private void EvaluatorParameter_ValueChanged(object sender, EventArgs e) {
201      ParameterizeEvaluator();
202      UpdateMoveEvaluators();
203      ParameterizeAnalyzers();
204      Maximization.Value = Evaluator.Maximization;
205      BoundsParameter.Value = Evaluator.Bounds;
206      if (ProblemSize.Value < Evaluator.MinimumProblemSize)
207        ProblemSize.Value = Evaluator.MinimumProblemSize;
208      else if (ProblemSize.Value > Evaluator.MaximumProblemSize)
209        ProblemSize.Value = Evaluator.MaximumProblemSize;
210      BestKnownQuality = new DoubleValue(Evaluator.BestKnownQuality);
211      Evaluator_QualityParameter_ActualNameChanged(null, EventArgs.Empty);
212    }
213    private void Evaluator_QualityParameter_ActualNameChanged(object sender, EventArgs e) {
214      ParameterizeOperators();
215    }
216    private void BoundsParameter_ValueChanged(object sender, EventArgs e) {
217      Bounds.ToStringChanged += new EventHandler(Bounds_ToStringChanged);
218      Bounds_ToStringChanged(null, EventArgs.Empty);
219    }
220    private void Bounds_ToStringChanged(object sender, EventArgs e) {
221      if (Bounds.Columns != 2 || Bounds.Rows < 1)
222        Bounds = new DoubleMatrix(1, 2);
223    }
224    private void Bounds_ItemChanged(object sender, EventArgs<int, int> e) {
225      if (e.Value2 == 0 && Bounds[e.Value, 1] <= Bounds[e.Value, 0])
226        Bounds[e.Value, 1] = Bounds[e.Value, 0] + 0.1;
227      if (e.Value2 == 1 && Bounds[e.Value, 0] >= Bounds[e.Value, 1])
228        Bounds[e.Value, 0] = Bounds[e.Value, 1] - 0.1;
229    }
230    private void MoveGenerator_AdditiveMoveParameter_ActualNameChanged(object sender, EventArgs e) {
231      string name = ((ILookupParameter<AdditiveMove>)sender).ActualName;
232      foreach (IAdditiveRealVectorMoveOperator op in Operators.OfType<IAdditiveRealVectorMoveOperator>()) {
233        op.AdditiveMoveParameter.ActualName = name;
234      }
235    }
236    private void SphereEvaluator_Parameter_ValueChanged(object sender, EventArgs e) {
237      SphereEvaluator eval = (Evaluator as SphereEvaluator);
238      if (eval != null) {
239        foreach (ISphereMoveEvaluator op in Operators.OfType<ISphereMoveEvaluator>()) {
240          op.C = eval.C;
241          op.Alpha = eval.Alpha;
242        }
243      }
244    }
245    private void RastriginEvaluator_Parameter_ValueChanged(object sender, EventArgs e) {
246      RastriginEvaluator eval = (Evaluator as RastriginEvaluator);
247      if (eval != null) {
248        foreach (IRastriginMoveEvaluator op in Operators.OfType<IRastriginMoveEvaluator>()) {
249          op.A = eval.A;
250        }
251      }
252    }
253    private void strategyVectorCreator_BoundsParameter_ValueChanged(object sender, EventArgs e) {
254      strategyVectorManipulator.BoundsParameter.Value = strategyVectorCreator.BoundsParameter.Value;
255    }
256    private void strategyVectorCreator_StrategyParameterParameter_ActualNameChanged(object sender, EventArgs e) {
257      string name = strategyVectorCreator.StrategyParameterParameter.ActualName;
258      strategyVectorCrossover.ParentsParameter.ActualName = name;
259      strategyVectorCrossover.StrategyParameterParameter.ActualName = name;
260      strategyVectorManipulator.StrategyParameterParameter.ActualName = name;
261    }
262    #endregion
263
264    #region Helpers
265    [StorableHook(HookType.AfterDeserialization)]
266    private void Initialize() {
267      InitializeOperators();
268      ProblemSizeParameter.ValueChanged += new EventHandler(ProblemSizeParameter_ValueChanged);
269      ProblemSize.ValueChanged += new EventHandler(ProblemSize_ValueChanged);
270      BoundsParameter.ValueChanged += new EventHandler(BoundsParameter_ValueChanged);
271      Bounds.ToStringChanged += new EventHandler(Bounds_ToStringChanged);
272      Bounds.ItemChanged += new EventHandler<EventArgs<int, int>>(Bounds_ItemChanged);
273      SolutionCreatorParameter.ValueChanged += new EventHandler(SolutionCreatorParameter_ValueChanged);
274      SolutionCreator.RealVectorParameter.ActualNameChanged += new EventHandler(SolutionCreator_RealVectorParameter_ActualNameChanged);
275      EvaluatorParameter.ValueChanged += new EventHandler(EvaluatorParameter_ValueChanged);
276      Evaluator.QualityParameter.ActualNameChanged += new EventHandler(Evaluator_QualityParameter_ActualNameChanged);
277      strategyVectorCreator.BoundsParameter.ValueChanged += new EventHandler(strategyVectorCreator_BoundsParameter_ValueChanged);
278      strategyVectorCreator.StrategyParameterParameter.ActualNameChanged += new EventHandler(strategyVectorCreator_StrategyParameterParameter_ActualNameChanged);
279    }
280    private void ParameterizeAnalyzers() {
281      foreach (IBestSingleObjectiveTestFunctionSolutionAnalyzer analyzer in BestSingleObjectiveTestFunctionSolutionAnalyzers) {
282        analyzer.RealVectorParameter.ActualName = SolutionCreator.RealVectorParameter.ActualName;
283        analyzer.ResultsParameter.ActualName = "Results";
284      }
285    }
286    private void InitializeOperators() {
287      operators = new List<IOperator>();
288      operators.Add(new BestSingleObjectiveTestFunctionSolutionAnalyzer());
289      ParameterizeAnalyzers();
290      operators.AddRange(ApplicationManager.Manager.GetInstances<IRealVectorOperator>().Cast<IOperator>());
291      operators.Add(strategyVectorCreator);
292      operators.Add(strategyVectorCrossover);
293      operators.Add(strategyVectorManipulator);
294      UpdateMoveEvaluators();
295      ParameterizeOperators();
296      InitializeMoveGenerators();
297    }
298    private void InitializeMoveGenerators() {
299      foreach (IAdditiveRealVectorMoveOperator op in Operators.OfType<IAdditiveRealVectorMoveOperator>()) {
300        if (op is IMoveGenerator) {
301          op.AdditiveMoveParameter.ActualNameChanged += new EventHandler(MoveGenerator_AdditiveMoveParameter_ActualNameChanged);
302        }
303      }
304    }
305    private void UpdateMoveEvaluators() {
306      foreach (ISingleObjectiveTestFunctionMoveEvaluator op in Operators.OfType<ISingleObjectiveTestFunctionMoveEvaluator>().ToList())
307        operators.Remove(op);
308      foreach (ISingleObjectiveTestFunctionMoveEvaluator op in ApplicationManager.Manager.GetInstances<ISingleObjectiveTestFunctionMoveEvaluator>())
309        if (op.EvaluatorType == Evaluator.GetType()) {
310          operators.Add(op);
311          #region Synchronize evaluator specific parameters with the parameters of the corresponding move evaluators
312          if (op is ISphereMoveEvaluator) {
313            SphereEvaluator e = (Evaluator as SphereEvaluator);
314            e.AlphaParameter.ValueChanged += new EventHandler(SphereEvaluator_Parameter_ValueChanged);
315            e.CParameter.ValueChanged += new EventHandler(SphereEvaluator_Parameter_ValueChanged);
316            ISphereMoveEvaluator em = (op as ISphereMoveEvaluator);
317            em.C = e.C;
318            em.Alpha = e.Alpha;
319          } else if (op is IRastriginMoveEvaluator) {
320            RastriginEvaluator e = (Evaluator as RastriginEvaluator);
321            e.AParameter.ValueChanged += new EventHandler(RastriginEvaluator_Parameter_ValueChanged);
322            IRastriginMoveEvaluator em = (op as IRastriginMoveEvaluator);
323            em.A = e.A;
324          }
325          #endregion
326        }
327      ParameterizeOperators();
328      OnOperatorsChanged();
329    }
330    private void ParameterizeSolutionCreator() {
331      SolutionCreator.LengthParameter.Value = new IntValue(ProblemSize.Value);
332    }
333    private void ParameterizeEvaluator() {
334      Evaluator.PointParameter.ActualName = SolutionCreator.RealVectorParameter.ActualName;
335    }
336    private void ParameterizeOperators() {
337      foreach (IRealVectorCrossover op in Operators.OfType<IRealVectorCrossover>()) {
338        op.ParentsParameter.ActualName = SolutionCreator.RealVectorParameter.ActualName;
339        op.ChildParameter.ActualName = SolutionCreator.RealVectorParameter.ActualName;
340        op.BoundsParameter.ActualName = BoundsParameter.Name;
341      }
342      foreach (IRealVectorManipulator op in Operators.OfType<IRealVectorManipulator>()) {
343        op.RealVectorParameter.ActualName = SolutionCreator.RealVectorParameter.ActualName;
344        op.BoundsParameter.ActualName = BoundsParameter.Name;
345      }
346      foreach (IRealVectorMoveOperator op in Operators.OfType<IRealVectorMoveOperator>()) {
347        op.RealVectorParameter.ActualName = SolutionCreator.RealVectorParameter.ActualName;
348      }
349      foreach (IRealVectorMoveGenerator op in Operators.OfType<IRealVectorMoveGenerator>()) {
350        op.BoundsParameter.ActualName = BoundsParameter.Name;
351      }
352      foreach (ISingleObjectiveTestFunctionAdditiveMoveEvaluator op in Operators.OfType<ISingleObjectiveTestFunctionAdditiveMoveEvaluator>()) {
353        op.QualityParameter.ActualName = Evaluator.QualityParameter.ActualName;
354        op.RealVectorParameter.ActualName = SolutionCreator.RealVectorParameter.ActualName;
355      }
356      foreach (IRealVectorPSOEncoder op in Operators.OfType<IRealVectorPSOEncoder>()) {
357        ((ILookupParameter)op.OriginalRealVectorParameter).ActualName = SolutionCreator.RealVectorParameter.ActualName;
358      }
359    }
360    #endregion
361  }
362}
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