[4516] | 1 | using System;
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| 2 | using System.Collections.Generic;
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| 3 | using System.Linq;
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| 4 | using System.Text;
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| 5 | using HeuristicLab.Operators;
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| 6 | using HeuristicLab.Data;
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| 7 | using HeuristicLab.Parameters;
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| 8 | using HeuristicLab.Core;
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| 9 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 10 | using HeuristicLab.Optimization;
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| 11 | using System.Threading;
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| 12 |
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| 13 | namespace HeuristicLab.Problems.MetaOptimization {
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| 14 | /// <summary>
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| 15 | /// A base class for operators which evaluate TSP solutions.
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| 16 | /// </summary>
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| 17 | [Item("MetaOptimizationEvaluator", "A base class for operators which evaluate Meta Optimization solutions.")]
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| 18 | [StorableClass]
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| 19 | public class MetaOptimizationEvaluator : SingleSuccessorOperator, IMetaOptimizationEvaluator {
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| 20 | private bool algorithmStopped;
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| 21 |
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| 22 | public ILookupParameter<DoubleValue> QualityParameter {
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| 23 | get { return (ILookupParameter<DoubleValue>)Parameters["Quality"]; }
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| 24 | }
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| 25 |
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| 26 | public ILookupParameter<IAlgorithm> AlgorithmParameter {
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| 27 | get { return (ILookupParameter<IAlgorithm>)Parameters["Algorithm"]; }
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| 28 | }
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| 29 | public ILookupParameter<IParameterSet> ParameterSetParameter {
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| 30 | get { return (ILookupParameter<IParameterSet>)Parameters["ParameterSet"]; }
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| 31 | }
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| 32 |
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| 33 | public MetaOptimizationEvaluator()
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| 34 | : base() {
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| 35 | Parameters.Add(new LookupParameter<DoubleValue>("Quality", "The evaluated quality of the TSP solution."));
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| 36 | Parameters.Add(new LookupParameter<IAlgorithm>("Algorithm", "Missing description."));
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| 37 | Parameters.Add(new LookupParameter<IParameterSet>("ParameterSet", "Missing description."));
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| 38 | }
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| 39 |
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| 40 | public override IOperation Apply() {
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| 41 | AlgorithmParameter.ActualValue.Prepare();
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| 42 | ParametrizeAlgorithm();
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| 43 | algorithmStopped = false;
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| 44 | AlgorithmParameter.ActualValue.Stopped += new EventHandler(ActualValue_Stopped);
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| 45 | AlgorithmParameter.ActualValue.Start();
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| 46 | while (!algorithmStopped) {
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| 47 | Thread.Sleep(1000); // wait for algorithm to complete; do not rely on Algorithm.ExecutionState here, because change of ExecutionState happens before Run is added (which causes problems because Algorithm might get cloned when its started already)
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| 48 | }
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| 49 | AlgorithmParameter.ActualValue.Stopped -= new EventHandler(ActualValue_Stopped);
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| 50 | this.QualityParameter.ActualValue = (DoubleValue)AlgorithmParameter.ActualValue.Results["BestQuality"].Value;
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| 51 | return base.Apply();
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| 52 | }
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| 53 |
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| 54 | void ActualValue_Stopped(object sender, EventArgs e) {
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| 55 | algorithmStopped = true;
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| 56 | }
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| 57 |
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| 58 | private void ParametrizeAlgorithm() {
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| 59 | foreach (KeyValuePair<string, IParameter> parameter in ParameterSetParameter.ActualValue.Parameters) {
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| 60 | if (parameter.Key == "Algorithm") {
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| 61 | this.AlgorithmParameter.ActualValue.Parameters[parameter.Value.Name].ActualValue = parameter.Value.ActualValue;
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| 62 | } else if (parameter.Key == "Problem") {
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| 63 | this.AlgorithmParameter.ActualValue.Problem.Parameters[parameter.Value.Name].ActualValue = parameter.Value.ActualValue;
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| 64 | }
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| 65 | }
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| 66 | }
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| 67 | }
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| 68 | }
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