[mlpack-svn] r16841 - mlpack/trunk/src/mlpack/methods/nystroem_method
fastlab-svn at coffeetalk-1.cc.gatech.edu
fastlab-svn at coffeetalk-1.cc.gatech.edu
Sun Jul 20 06:42:27 EDT 2014
Author: marcus
Date: Sun Jul 20 06:42:27 2014
New Revision: 16841
Log:
Avoid direct multiplication with a diagmat.
Modified:
mlpack/trunk/src/mlpack/methods/nystroem_method/nystroem_method_impl.hpp
Modified: mlpack/trunk/src/mlpack/methods/nystroem_method/nystroem_method_impl.hpp
==============================================================================
--- mlpack/trunk/src/mlpack/methods/nystroem_method/nystroem_method_impl.hpp (original)
+++ mlpack/trunk/src/mlpack/methods/nystroem_method/nystroem_method_impl.hpp Sun Jul 20 06:42:27 2014
@@ -81,8 +81,8 @@
arma::svd(U, s, V, miniKernel);
// Construct the output matrix.
- arma::mat normalization = (U * arma::diagmat(1.0 / sqrt(s)));
- output = semiKernel * normalization * V;
+ arma::mat normalization = arma::diagmat(1.0 / sqrt(s));
+ output = semiKernel * U * normalization * V;
}
}; // namespace kernel
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