Changeset 13585 for trunk/sources

Timestamp:

02/04/16 13:02:34 (9 years ago)

Author:

mkommend

Message:

#2574: Fixed F1Score- and ConfusionMatrixCalculator.

Location:

trunk/sources/HeuristicLab.Problems.DataAnalysis/3.4/OnlineCalculators

Files:

• ConfusionMatrixCalculator.cs (modified) (1 diff)
• FOneScoreCalculator.cs (modified) (1 diff)

trunk/sources/HeuristicLab.Problems.DataAnalysis/3.4/OnlineCalculators/ConfusionMatrixCalculator.cs

@@ -27 +27 @@
   public class ConfusionMatrixCalculator {
     public static double[,] Calculate(IEnumerable<double> originalValues, IEnumerable<double> estimatedValues, out OnlineCalculatorError errorState) {
+      if (!originalValues.Any() || !estimatedValues.Any()) {
+        errorState = OnlineCalculatorError.InsufficientElementsAdded;
+        return null;
+      }
 
       Dictionary<double, int> classValueIndexMapping = new Dictionary<double, int>();

trunk/sources/HeuristicLab.Problems.DataAnalysis/3.4/OnlineCalculators/FOneScoreCalculator.cs

@@ -36 +36 @@
         return double.NaN;
       }
+      //only one class has been present => F1 score cannot be calculated
+      if (confusionMatrix.GetLength(0) != 2 || confusionMatrix.GetLength(1) != 2) {
+        return double.NaN;
+      }
+
       return CalculateFOne(confusionMatrix);
     }