Changeset 2136 for trunk/sources/HeuristicLab.GP.StructureIdentification/3.3/Evaluators/CoefficientOfDeterminationEvaluator.cs

Timestamp:

07/06/09 17:12:37 (15 years ago)

Author:

gkronber

Message:

Improved handling of exceptional cases in data-based modeling evaluators. #688 (SimpleEvaluators should handle exceptional cases more gracefully)

File:

• trunk/sources/HeuristicLab.GP.StructureIdentification/3.3/Evaluators/CoefficientOfDeterminationEvaluator.cs (modified) (2 diffs)

trunk/sources/HeuristicLab.GP.StructureIdentification/3.3/Evaluators/CoefficientOfDeterminationEvaluator.cs

@@ -37 +37 @@
       }
     }
-    
+
     public override string Description {
       get {
@@ -46 +46 @@
 
     public override double Evaluate(double[,] values) {
-
-      double quality = SimpleR2Evaluator.Calculate(values);
-      if (double.IsNaN(quality) || double.IsInfinity(quality))
-        quality = double.MaxValue;
-
-      return quality;
+      try {
+        return SimpleR2Evaluator.Calculate(values);
+      }
+      catch (ArgumentException) {
+        return double.NegativeInfinity;
+      }
     }
   }