Changeset 13038 for trunk/sources

Timestamp:

10/19/15 18:04:40 (9 years ago)

Author:

bburlacu

Message:

#2492: Make sure the returned value is inside the [-1, +1] interval.

File:

• trunk/sources/HeuristicLab.Problems.DataAnalysis/3.4/OnlineCalculators/OnlinePearsonsRCalculator.cs (modified) (1 diff)

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

@@ -37 +37 @@
           return 0.0;
         } else {
-          return covCalculator.Covariance / (Math.Sqrt(xVar) * Math.Sqrt(yVar));
+          var r = covCalculator.Covariance / (Math.Sqrt(xVar) * Math.Sqrt(yVar));
+          if (r < -1.0) r = -1.0;
+          else if (r > 1.0) r = 1.0;
+          return r;
         }
       }