From 99de0b655fb99e9098faeb11bc3feaf4cb46607e Mon Sep 17 00:00:00 2001
From: marcus <marcus.edel@fu-berlin.de>
Date: Fri, 30 Oct 2015 19:59:33 +0100
Subject: [PATCH] Use the new optimizer interface.

---
 src/mlpack/methods/ann/optimizer/steepest_descent.hpp | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/src/mlpack/methods/ann/optimizer/steepest_descent.hpp b/src/mlpack/methods/ann/optimizer/steepest_descent.hpp
index 5639979448..44b18b744b 100644
--- a/src/mlpack/methods/ann/optimizer/steepest_descent.hpp
+++ b/src/mlpack/methods/ann/optimizer/steepest_descent.hpp
@@ -34,7 +34,7 @@ class SteepestDescent
    * @param mom The momentum coefficient.
    */
   SteepestDescent(DecomposableFunctionType& function,
-                  const double lr = 1,
+                  const double lr = 0.5,
                   const double mom = 0) :
       function(function),
       lr(lr),
@@ -66,13 +66,12 @@ class SteepestDescent
   {
     if (gradient.n_elem != 0)
     {
-      DataType outputGradient;
-      function.Gradient(outputGradient);
+      DataType outputGradient = function.Gradient();
       gradient += outputGradient;
     }
     else
     {
-      function.Gradient(gradient);
+      gradient = function.Gradient();
     }
   }