Changeset 5846 for trunk/sources/HeuristicLab.Problems.DataAnalysis.Symbolic.Regression/3.4/SingleObjective
- Timestamp:
- 03/28/11 17:27:00 (14 years ago)
- File:
-
- 1 edited
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trunk/sources/HeuristicLab.Problems.DataAnalysis.Symbolic.Regression/3.4/SingleObjective/SymbolicRegressionSingleObjectivePearsonRSquaredEvaluator.cs
r5823 r5846 55 55 IEnumerable<double> estimatedValues = interpreter.GetSymbolicExpressionTreeValues(solution, problemData.Dataset, rows); 56 56 IEnumerable<double> originalValues = problemData.Dataset.GetEnumeratedVariableValues(problemData.TargetVariable, rows); 57 try { 58 return OnlinePearsonsRSquaredEvaluator.Calculate(estimatedValues, originalValues); 59 } 60 catch (ArgumentException) { 61 // if R² cannot be calculated because of NaN or ininity elements => return worst possible fitness value 62 return 0.0; 63 } 57 double r2 = OnlinePearsonsRSquaredEvaluator.Calculate(estimatedValues, originalValues); 58 return double.IsNaN(r2) ? 0.0 : r2; 64 59 } 65 60
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