Changeset 15158 for trunk/sources/HeuristicLab.Algorithms.DataAnalysis/3.4/KernelRidgeRegression/KernelFunctions/MultiquadraticKernel.cs

Timestamp:

07/06/17 13:35:49 (7 years ago)

Author:

bwerth

Message:

#2699 added checks for Beta == null and according exceptions

File:

• trunk/sources/HeuristicLab.Algorithms.DataAnalysis/3.4/KernelRidgeRegression/KernelFunctions/MultiquadraticKernel.cs (modified) (3 diffs)

trunk/sources/HeuristicLab.Algorithms.DataAnalysis/3.4/KernelRidgeRegression/KernelFunctions/MultiquadraticKernel.cs

@@ -36 +36 @@
     protected MultiquadraticKernel(bool deserializing) : base(deserializing) { }
 
-    protected MultiquadraticKernel(MultiquadraticKernel original, Cloner cloner)
-                : base(original, cloner) { }
+    protected MultiquadraticKernel(MultiquadraticKernel original, Cloner cloner) : base(original, cloner) { }
 
     public MultiquadraticKernel() { }
@@ -46 +45 @@
 
     protected override double Get(double norm) {
+      if (Beta == null) throw new InvalidOperationException("Can not calculate kernel distance while Beta is null");
       var beta = Beta.Value;
       if (Math.Abs(beta) < double.Epsilon) return double.NaN;
@@ -54 +54 @@
     //-n²/(d³*sqrt(C+n²/d²))
     protected override double GetGradient(double norm) {
+      if (Beta == null) throw new InvalidOperationException("Can not calculate kernel distance gradient while Beta is null");
       var beta = Beta.Value;
       if (Math.Abs(beta) < double.Epsilon) return double.NaN;