Changeset 10263 for branches/GrammaticalEvolution/HeuristicLab.Problems.GrammaticalEvolution/Symbolic/GESymbolicRegressionSingleObjectiveEvaluator.cs

Timestamp:

12/20/13 16:17:52 (10 years ago)

Author:

gkronber

Message:

#2109 implemented a wrapper for evaluators that transforms genotypes to phenotypes for symbolic regression (deleted obsolete evaluators)

Location:

branches/GrammaticalEvolution/HeuristicLab.Problems.GrammaticalEvolution

Files:

• . (modified) (1 prop)
• Symbolic/GESymbolicRegressionSingleObjectiveEvaluator.cs (modified) (2 diffs)

branches/GrammaticalEvolution/HeuristicLab.Problems.GrammaticalEvolution

@@ -2 +2 @@
 *.Settings
 Plugin.cs
+*.user
+bin

@@ -2 +2 @@
 *.Settings
 Plugin.cs
+*.user
+bin

branches/GrammaticalEvolution/HeuristicLab.Problems.GrammaticalEvolution/Symbolic/GESymbolicRegressionSingleObjectiveEvaluator.cs

@@ -20 +20 @@
 #endregion
 
+using System.Collections.Generic;
 using HeuristicLab.Common;
+using HeuristicLab.Core;
+using HeuristicLab.Encodings.IntegerVectorEncoding;
+using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
+using HeuristicLab.Parameters;
 using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
 using HeuristicLab.Problems.DataAnalysis;
@@ -27 +32 @@
 namespace HeuristicLab.Problems.GrammaticalEvolution {
   [StorableClass]
-  public abstract class GESymbolicRegressionSingleObjectiveEvaluator : GESymbolicDataAnalysisSingleObjectiveEvaluator<IRegressionProblemData>,
+  public class GESymbolicRegressionSingleObjectiveEvaluator : GESymbolicDataAnalysisSingleObjectiveEvaluator<IRegressionProblemData>,
                                                                        IGESymbolicRegressionSingleObjectiveEvaluator {
+
+    public const string EvaluatorParameterName = "Evaluator";
+    public IValueParameter<ISymbolicRegressionSingleObjectiveEvaluator> EvaluatorParameter {
+      get { return (IValueParameter<ISymbolicRegressionSingleObjectiveEvaluator>)Parameters[EvaluatorParameterName]; }
+    }
+
+    private ISymbolicRegressionSingleObjectiveEvaluator Evaluator {
+      get { return EvaluatorParameter.Value; }
+    }
+
     [StorableConstructor]
     protected GESymbolicRegressionSingleObjectiveEvaluator(bool deserializing) : base(deserializing) { }
     protected GESymbolicRegressionSingleObjectiveEvaluator(GESymbolicRegressionSingleObjectiveEvaluator original, Cloner cloner) : base(original, cloner) { }
-    protected GESymbolicRegressionSingleObjectiveEvaluator() : base() { }
+    public GESymbolicRegressionSingleObjectiveEvaluator()
+      : base() {
+      Parameters.Add(new ValueParameter<ISymbolicRegressionSingleObjectiveEvaluator>(EvaluatorParameterName, "The symbolic regression evaluator that should be used to assess the quality of trees.", new SymbolicRegressionSingleObjectivePearsonRSquaredEvaluator()));
+    }
+
+    public override IDeepCloneable Clone(Cloner cloner) {
+      return new GESymbolicRegressionSingleObjectiveEvaluator(this, cloner);
+    }
+
+    public override bool Maximization {
+      get { return Evaluator.Maximization; }
+    }
+
+    public override IOperation Apply() {
+      var genotype = IntegerVectorParameter.ActualValue;
+
+      // translate to phenotype
+      var tree = GenotypeToPhenotypeMapperParameter.ActualValue.Map(
+        SymbolicExpressionTreeGrammarParameter.ActualValue,
+        genotype
+      );
+      SymbolicExpressionTreeParameter.ActualValue = tree; // write to scope for analyzers
+
+      // create operation for evaluation
+      var evalOp = ExecutionContext.CreateChildOperation(Evaluator);
+      var successorOp = base.Apply();
+
+      return new OperationCollection(evalOp, successorOp);
+    }
   }
 }

@@ -2 +2 @@
 *.Settings
 Plugin.cs
+*.user
+bin