online optimizer

git-svn-id: https://ws10smt.googlecode.com/svn/trunk@631 ec762483-ff6d-05da-a07a-a48fb63a330f

1 files changed, 14 insertions, 0 deletions

diff --git a/training/online_optimizer.cc b/training/online_optimizer.cc
new file mode 100644
index 00000000..db55c95e
--- /dev/null
+++ b/training/online_optimizer.cc
@@ -0,0 +1,14 @@
+#include "online_optimizer.h"
+
+LearningRateSchedule::~LearningRateSchedule() {}
+
+double StandardLearningRate::eta(int k) const {
+  return eta_0_ / (1.0 + k / N_);
+}
+
+double ExponentialDecayLearningRate::eta(int k) const {
+  return eta_0_ * pow(alpha_, k / N_);
+}
+
+OnlineOptimizer::~OnlineOptimizer() {}
+