Changeset 4477 for trunk/sources/HeuristicLab.Problems.DataAnalysis.Regression/3.3/Symbolic/Evaluators

Timestamp:

09/23/10 17:12:30 (14 years ago)

Author:

gkronber

Message:

Merged r4458, r4459,r4462,r4464 from data analysis exploration branch into trunk. #1142

Location:

trunk/sources

Files:

• . (modified) (1 prop)
• HeuristicLab.Problems.DataAnalysis.Regression/3.3/Symbolic/Evaluators/SymbolicRegressionScaledMeanSquaredErrorEvaluator.cs (modified) (1 diff)

trunk/sources/HeuristicLab.Problems.DataAnalysis.Regression/3.3/Symbolic/Evaluators/SymbolicRegressionScaledMeanSquaredErrorEvaluator.cs

@@ -131 +131 @@
         beta = 1;
       } else {
-        if (yVarianceCalculator.Variance.IsAlmost(0.0))
+        if (yVarianceCalculator.PopulationVariance.IsAlmost(0.0))
           beta = 1;
         else
-          beta = ytCovarianceEvaluator.Covariance / yVarianceCalculator.Variance;
+          beta = ytCovarianceEvaluator.Covariance / yVarianceCalculator.PopulationVariance;
 
         alpha = tMeanCalculator.Mean - beta * yVarianceCalculator.Mean;