[mlpack-git] master: Use Gradient() to get the gradient. (3a1a98d)

[gitdub at big.cc.gt.atl.ga.us]

Repository : https://github.com/mlpack/mlpack

On branch  : master
Link       : https://github.com/mlpack/mlpack/compare/904762495c039e345beba14c1142fd719b3bd50e...f94823c800ad6f7266995c700b1b630d5ffdcf40

>---------------------------------------------------------------

commit 3a1a98d95aca0464008dc3f7c9745a7c756abe45
Author: Marcus Edel <marcus.edel at fu-berlin.de>
Date:   Wed Jan 21 14:39:05 2015 +0100

    Use Gradient() to get the gradient.


>---------------------------------------------------------------

3a1a98d95aca0464008dc3f7c9745a7c756abe45
 src/mlpack/methods/ann/ffnn.hpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/mlpack/methods/ann/ffnn.hpp b/src/mlpack/methods/ann/ffnn.hpp
index 4b5e951..876f924 100644
--- a/src/mlpack/methods/ann/ffnn.hpp
+++ b/src/mlpack/methods/ann/ffnn.hpp
@@ -353,8 +353,9 @@ class FFNN
     typename std::enable_if<I < sizeof...(Tp), void>::type
     Gradients(std::tuple<Tp...>& t)
     {
-      gradients[gradientNum++] += std::get<I>(t).OutputLayer().Delta() *
-          std::get<I>(t).InputLayer().InputActivation().t();
+      MatType gradient;
+      std::get<I>(t).Gradient(gradient);
+      gradients[gradientNum++] += gradient;
 
       Gradients<I + 1, Tp...>(t);
     }