initial working cg

1 files changed, 2 insertions, 0 deletions

diff --git a/loss_functions.h b/loss_functions.h
index e3b29471..b6cecbfc 100644
--- a/loss_functions.h
+++ b/loss_functions.h
@@ -27,6 +27,8 @@ public :
 	virtual float getUpdate(float prediction, float label, float eta_t, float norm) = 0;
 	virtual float getRevertingWeight(float prediction, float eta_t) = 0;
 	virtual float getSquareGrad(float prediction, float label) = 0;
+	virtual float first_derivative(float prediction, float label) = 0;
+	virtual float second_derivative(float prediction, float label) = 0;
 	virtual ~loss_function() {};
 };