Changeset 6754 for trunk/sources/HeuristicLab.Problems.DataAnalysis.Symbolic.Regression/3.4

Timestamp:

09/13/11 17:01:47 (13 years ago)

Author:

gkronber

Message:

#1640 fixed a problem with empty trainingindizes when using cross-validation

Location:

trunk/sources/HeuristicLab.Problems.DataAnalysis.Symbolic.Regression/3.4

Files:

• MultiObjective/SymbolicRegressionMultiObjectiveProblem.cs (modified) (2 diffs)
• SingleObjective/SymbolicRegressionSingleObjectiveProblem.cs (modified) (2 diffs)

trunk/sources/HeuristicLab.Problems.DataAnalysis.Symbolic.Regression/3.4/MultiObjective/SymbolicRegressionMultiObjectiveProblem.cs

@@ -77 +77 @@
 
     private void UpdateEstimationLimits() {
-      if (ProblemData.TrainingPartition.Start < ProblemData.TrainingPartition.End) {
+      if (ProblemData.TrainingIndizes.Any()) {
         var targetValues = ProblemData.Dataset.GetDoubleValues(ProblemData.TargetVariable, ProblemData.TrainingIndizes).ToList();
         var mean = targetValues.Average();
@@ -83 +83 @@
         EstimationLimits.Upper = mean + PunishmentFactor * range;
         EstimationLimits.Lower = mean - PunishmentFactor * range;
+      } else {
+        EstimationLimits.Upper = double.MaxValue;
+        EstimationLimits.Lower = double.MinValue;
       }
     }

trunk/sources/HeuristicLab.Problems.DataAnalysis.Symbolic.Regression/3.4/SingleObjective/SymbolicRegressionSingleObjectiveProblem.cs

@@ -74 +74 @@
 
     private void UpdateEstimationLimits() {
-      if (ProblemData.TrainingPartition.Start < ProblemData.TrainingPartition.End) {
+      if (ProblemData.TrainingIndizes.Any()) {
         var targetValues = ProblemData.Dataset.GetDoubleValues(ProblemData.TargetVariable, ProblemData.TrainingIndizes).ToList();
         var mean = targetValues.Average();
@@ -80 +80 @@
         EstimationLimits.Upper = mean + PunishmentFactor * range;
         EstimationLimits.Lower = mean - PunishmentFactor * range;
+      } else {
+        EstimationLimits.Upper = double.MaxValue;
+        EstimationLimits.Lower = double.MinValue;
       }
     }