Changeset 8455 for trunk/sources/HeuristicLab.Algorithms.DataAnalysis/3.4/GaussianProcess/GaussianProcessModel.cs

Timestamp:

08/09/12 09:33:23 (12 years ago)

Author:

gkronber

Message:

#1902 changed calculation of gradients for covariance functions to reduce allocations of arrays

File:

• trunk/sources/HeuristicLab.Algorithms.DataAnalysis/3.4/GaussianProcess/GaussianProcessModel.cs (modified) (1 diff)

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

@@ -188 +188 @@
         for (int i = 0; i < n; i++) {
           for (int j = 0; j < n; j++) {
-            var covDeriv = covarianceFunction.GetGradient(i, j);
             for (int k = 0; k < covGradients.Length; k++) {
-              covGradients[k] += q[i, j] * covDeriv[k];
+              covGradients[k] += q[i, j] * covarianceFunction.GetGradient(i, j, k);
             }
           }