source: branches/HeuristicLab.MetaOptimization/HeuristicLab.Problems.MetaOptimization/3.3/Analyzers/BestQualityAnalyzer.cs @ 4771

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using HeuristicLab.Operators;
using HeuristicLab.Optimization;
using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
using HeuristicLab.Core;
using HeuristicLab.Parameters;
using HeuristicLab.Data;

namespace HeuristicLab.Problems.MetaOptimization {
  /// <summary>
  /// TODO An operator for analyzing the best solution of Traveling Salesman Problems given in path representation using city coordinates.
  /// </summary>
  [Item("BestQualityAnalyzer", "TODO An operator for analyzing the best solution of Traveling Salesman Problems given in path representation using city coordinates.")]
  [StorableClass]
  public sealed class BestQualityAnalyzer : SingleSuccessorOperator, IAnalyzer {

    public ScopeTreeLookupParameter<IParameterSet> ParameterSetParameter {
      get { return (ScopeTreeLookupParameter<IParameterSet>)Parameters["ParameterSet"]; }
    }
    public ScopeTreeLookupParameter<DoubleValue> QualityParameter {
      get { return (ScopeTreeLookupParameter<DoubleValue>)Parameters["Quality"]; }
    }
    public LookupParameter<IParameterSet> BestSolutionParameter {
      get { return (LookupParameter<IParameterSet>)Parameters["BestSolution"]; }
    }
    public ValueLookupParameter<ResultCollection> ResultsParameter {
      get { return (ValueLookupParameter<ResultCollection>)Parameters["Results"]; }
    }
    public LookupParameter<DoubleValue> BestKnownQualityParameter {
      get { return (LookupParameter<DoubleValue>)Parameters["BestKnownQuality"]; }
    }
    public LookupParameter<IParameterSet> BestKnownSolutionParameter {
      get { return (LookupParameter<IParameterSet>)Parameters["BestKnownSolution"]; }
    }

    public BestQualityAnalyzer()
      : base() {
      Parameters.Add(new ScopeTreeLookupParameter<IParameterSet>("ParameterSet", "TODO The TSP solutions given in path representation from which the best solution should be analyzed."));
      Parameters.Add(new ScopeTreeLookupParameter<DoubleValue>("Quality", "TODO The qualities of the TSP solutions which should be analyzed."));
      Parameters.Add(new LookupParameter<IParameterSet>("BestSolution", "TODO The best TSP solution."));
      Parameters.Add(new ValueLookupParameter<ResultCollection>("Results", "TODO The result collection where the best TSP solution should be stored."));
      Parameters.Add(new LookupParameter<DoubleValue>("BestKnownQuality", "TODO The quality of the best known solution of this TSP instance."));
      Parameters.Add(new LookupParameter<IParameterSet>("BestKnownSolution", "TODO The best known solution of this TSP instance."));
    }

    public override IOperation Apply() {
      ItemArray<DoubleValue> qualities = QualityParameter.ActualValue;
      ResultCollection results = ResultsParameter.ActualValue;
      DoubleValue bestKnownQuality = BestKnownQualityParameter.ActualValue;
      ItemArray<IParameterSet> parameterSets = ParameterSetParameter.ActualValue;

      int i = qualities.Select((x, index) => new { index, x.Value }).OrderBy(x => x.Value).First().index;

      if (bestKnownQuality == null || qualities[i].Value < bestKnownQuality.Value) {
        BestKnownQualityParameter.ActualValue = new DoubleValue(qualities[i].Value);
        BestKnownSolutionParameter.ActualValue = (IParameterSet)parameterSets[i].Clone();
      }

      // todo: more

      return base.Apply();
    }
  }
}