Changeset 6002 for trunk/sources/HeuristicLab.Algorithms.DataAnalysis/3.4/Linear/LinearRegression.cs

Timestamp:

04/11/11 18:41:03 (13 years ago)

Author:

gkronber

Message:

#790 Fixed minor issues in LDA, LR, SVC and SVR to make sure everything works correctly in presence of NaN and infinity values.

File:

• trunk/sources/HeuristicLab.Algorithms.DataAnalysis/3.4/Linear/LinearRegression.cs (modified) (1 diff)

trunk/sources/HeuristicLab.Algorithms.DataAnalysis/3.4/Linear/LinearRegression.cs

@@ -76 +76 @@
       IEnumerable<int> rows = Enumerable.Range(samplesStart, samplesEnd - samplesStart);
       double[,] inputMatrix = AlglibUtil.PrepareInputMatrix(dataset, allowedInputVariables.Concat(new string[] { targetVariable }), rows);
+      if (inputMatrix.Cast<double>().Any(x => double.IsNaN(x) || double.IsInfinity(x)))
+        throw new NotSupportedException("Linear regression does not support NaN or infinity values in the input dataset.");
 
       alglib.linearmodel lm = new alglib.linearmodel();