Changeset 12068 for branches/SymbolicExpressionTreeDiversityAnalyzers/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/TreeMatching

Timestamp:

02/24/15 17:07:41 (10 years ago)

Author:

bburlacu

Message:

#2326: Fixed mistakes and wired similarity calculators directly into the problem and correctly initialized the properties of the phenotypic similarity calculator.

File:

• branches/SymbolicExpressionTreeDiversityAnalyzers/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/TreeMatching/SymbolicExpressionTreePhenotypicSimilarityCalculator.cs (modified) (3 diffs)

branches/SymbolicExpressionTreeDiversityAnalyzers/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/TreeMatching/SymbolicExpressionTreePhenotypicSimilarityCalculator.cs

@@ -20 +20 @@
 #endregion
 
+using System;
 using HeuristicLab.Common;
 using HeuristicLab.Core;
@@ -53 +54 @@
 
     public double CalculateSimilarity(ISymbolicExpressionTree t1, ISymbolicExpressionTree t2) {
+      if (Interpreter == null || ProblemData == null)
+        throw new InvalidOperationException("Cannot calculate phenotypic similarity when no interpreter or problem data were set.");
+
       var v1 = Interpreter.GetSymbolicExpressionTreeValues(t1, ProblemData.Dataset, ProblemData.TrainingIndices);
       var v2 = Interpreter.GetSymbolicExpressionTreeValues(t2, ProblemData.Dataset, ProblemData.TrainingIndices);
+
+      if (v1.Variance().IsAlmost(0) && v2.Variance().IsAlmost(0))
+        return 1.0;
 
       OnlineCalculatorError error;
@@ -68 +75 @@
       if (leftSolution == rightSolution)
         return 1.0;
+
+      if (!leftSolution.Variables.ContainsKey("EstimatedValues") || !rightSolution.Variables.ContainsKey("EstimatedValues"))
+        throw new ArgumentException("No estimated values are present in the subscopes.");
 
       var leftValues = (DoubleArray)leftSolution.Variables["EstimatedValues"].Value;