From 655f636a42d6e1d4518b712cfac6d973424de693 Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Sun, 08 Mar 2015 18:25:28 +0000
Subject: [PATCH] detection layer fixed
---
src/activations.h | 12 ++++++++++++
1 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/src/activations.h b/src/activations.h
index d9cf662..337e5f1 100644
--- a/src/activations.h
+++ b/src/activations.h
@@ -18,5 +18,17 @@
void gradient_array_ongpu(float *x, int n, ACTIVATION a, float *delta);
#endif
+static inline float linear_activate(float x){return x;}
+static inline float sigmoid_activate(float x){return 1./(1. + exp(-x));}
+static inline float relu_activate(float x){return x*(x>0);}
+static inline float ramp_activate(float x){return x*(x>0)+.1*x;}
+static inline float tanh_activate(float x){return (exp(2*x)-1)/(exp(2*x)+1);}
+
+static inline float linear_gradient(float x){return 1;}
+static inline float sigmoid_gradient(float x){return (1-x)*x;}
+static inline float relu_gradient(float x){return (x>0);}
+static inline float ramp_gradient(float x){return (x>0)+.1;}
+static inline float tanh_gradient(float x){return 1-x*x;}
+
#endif
--
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