Changeset 2136 for trunk/sources/HeuristicLab.Modeling/3.2/SimpleMSEEvaluator.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.Modeling/3.2/SimpleMSEEvaluator.cs (modified) (2 diffs)

trunk/sources/HeuristicLab.Modeling/3.2/SimpleMSEEvaluator.cs

@@ -16 +16 @@
     }
     public override double Evaluate(double[,] values) {
-      return Calculate(values);
+      try {
+        return Calculate(values);
+      }
+      catch (ArgumentException) {
+        return double.PositiveInfinity;
+      }
     }
 
@@ -32 +37 @@
         }
       }
-
-      double mse = sse / cnt;
-      return mse;
+      if (cnt > 0) {
+        double mse = sse / cnt;
+        return mse;
+      } else {
+        throw new ArgumentException("Mean squared errors is not defined for input vectors of NaN or Inf");
+      }
     }
   }