Changeset 8463 for trunk/sources/HeuristicLab.Algorithms.DataAnalysis/3.4/GaussianProcess/Util.cs

Timestamp:

08/09/12 16:32:44 (12 years ago)

Author:

gkronber

Message:

#1902 improved GPR implementation

File:

• trunk/sources/HeuristicLab.Algorithms.DataAnalysis/3.4/GaussianProcess/Util.cs (modified) (2 diffs)

trunk/sources/HeuristicLab.Algorithms.DataAnalysis/3.4/GaussianProcess/Util.cs

@@ -20 +20 @@
 #endregion
 
-using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -32 +31 @@
     public static double SqrDist(double x, double y) {
       double d = x - y;
-      return Math.Max(d * d, 0.0);
+      return d * d;
     }
 
     public static double SqrDist(IEnumerable<double> x, IEnumerable<double> y) {
-      return x.Zip(y, SqrDist).Sum();
+      return x.Zip(y, (a, b) => (a - b) * (a - b)).Sum();
     }