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Ignore:
Timestamp:
11/19/15 11:42:02 (8 years ago)
Author:
gkronber
Message:

#2472: merged r12921,r12936:12938,r12940,r12947,r13055:13058,r13163,r13267,r13269 from trunk to stable

Location:
stable
Files:
2 edited
1 copied

Legend:

Unmodified
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Removed

  • stable

  • stable/HeuristicLab.Problems.GeneticProgramming/3.3/BasicSymbolicRegression/Problem.cs

    r12937 r13280  
    3939
    4040    #region parameter names
    41 
    4241    private const string ProblemDataParameterName = "ProblemData";
    43 
    4442    #endregion
    45 
    46     public event EventHandler ProblemDataChanged;
    4743
    4844    #region Parameter Properties
    … …  
    5248      get { return (IValueParameter<IRegressionProblemData>)Parameters[ProblemDataParameterName]; }
    5349    }
    54 
    5550    #endregion
    5651
    5752    #region Properties
    58 
    5953    public IRegressionProblemData ProblemData {
    6054      get { return ProblemDataParameter.Value; }
    … …  
    6256    }
    6357    IDataAnalysisProblemData IDataAnalysisProblem.ProblemData { get { return ProblemData; } }
     58    #endregion
    6459
    65 
    66     #endregion
     60    public event EventHandler ProblemDataChanged;
    6761
    6862    public override bool Maximization {
    6963      get { return true; }
    7064    }
     65
     66    #region item cloning and persistence
     67    // persistence
     68    [StorableConstructor]
     69    private Problem(bool deserializing) : base(deserializing) { }
     70    [StorableHook(HookType.AfterDeserialization)]
     71    private void AfterDeserialization() {
     72      RegisterEventHandlers();
     73    }
     74
     75    // cloning
     76    private Problem(Problem original, Cloner cloner)
     77      : base(original, cloner) {
     78      RegisterEventHandlers();
     79    }
     80    public override IDeepCloneable Clone(Cloner cloner) { return new Problem(this, cloner); }
     81    #endregion
    7182
    7283    public Problem()
    … …  
    103114    }
    104115
    105 
    106116    private IEnumerable<double> InterpretRec(ISymbolicExpressionTreeNode node, IDataset dataset, IEnumerable<int> rows) {
    107       var eval = CreateEvalClosure(dataset, rows);
     117      Func<ISymbolicExpressionTreeNode, ISymbolicExpressionTreeNode, Func<double, double, double>, IEnumerable<double>> binaryEval =
     118        (left, right, f) => InterpretRec(left, dataset, rows).Zip(InterpretRec(right, dataset, rows), f);
    108119
    109120      switch (node.Symbol.Name) {
    110         case "+": return eval(node.GetSubtree(0), node.GetSubtree(1), (x, y) => x + y);
    111         case "*": return eval(node.GetSubtree(0), node.GetSubtree(1), (x, y) => x * y);
    112         case "-": return eval(node.GetSubtree(0), node.GetSubtree(1), (x, y) => x - y);
    113         case "%": return eval(node.GetSubtree(0), node.GetSubtree(1), (x, y) => y.IsAlmost(0.0) ? 0.0 : x / y); // protected division
     121        case "+": return binaryEval(node.GetSubtree(0), node.GetSubtree(1), (x, y) => x + y);
     122        case "*": return binaryEval(node.GetSubtree(0), node.GetSubtree(1), (x, y) => x * y);
     123        case "-": return binaryEval(node.GetSubtree(0), node.GetSubtree(1), (x, y) => x - y);
     124        case "%": return binaryEval(node.GetSubtree(0), node.GetSubtree(1), (x, y) => y.IsAlmost(0.0) ? 0.0 : x / y); // protected division
    114125        default: {
    115126            double erc;
    … …  
    124135    }
    125136
    126     private Func<ISymbolicExpressionTreeNode, ISymbolicExpressionTreeNode, Func<double, double, double>, IEnumerable<double>> CreateEvalClosure(IDataset dataset, IEnumerable<int> rows) {
    127       // capture dataset and rows in scope
    128       return (a, b, f) => {
    129         var leftResult = InterpretRec(a, dataset, rows);
    130         var rightResult = InterpretRec(b, dataset, rows);
    131         return leftResult.Zip(rightResult, f);
    132       };
    133     }
    134 
    135     #region item cloning and persistence
    136     // persistence
    137     [StorableConstructor]
    138     private Problem(bool deserializing) : base(deserializing) { }
    139 
    140     [StorableHook(HookType.AfterDeserialization)]
    141     private void AfterDeserialization() {
    142       RegisterEventHandlers();
    143     }
    144 
    145     // cloning
    146     private Problem(Problem original, Cloner cloner)
    147       : base(original, cloner) {
    148       RegisterEventHandlers();
    149     }
    150     public override IDeepCloneable Clone(Cloner cloner) {
    151       return new Problem(this, cloner);
    152     }
    153     #endregion
    154137
    155138    #region events
    156 
    157139    private void RegisterEventHandlers() {
    158140      ProblemDataParameter.ValueChanged += new EventHandler(ProblemDataParameter_ValueChanged);
    … …  
    197179      Encoding.Grammar = g;
    198180    }
    199 
    200181    #endregion
    201182
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