From 0305fb4d99cf1efc7d4aa4d2ee2d65d54500d437 Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Thu, 26 Nov 2015 19:48:01 +0000
Subject: [PATCH] Some changes
---
src/activations.h | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/src/activations.h b/src/activations.h
index 22a713a..d824d1e 100644
--- a/src/activations.h
+++ b/src/activations.h
@@ -4,7 +4,7 @@
#include "math.h"
typedef enum{
- LOGISTIC, RELU, RELIE, LINEAR, RAMP, TANH, PLSE, LEAKY
+ LOGISTIC, RELU, RELIE, LINEAR, RAMP, TANH, PLSE, LEAKY, ELU
}ACTIVATION;
ACTIVATION get_activation(char *s);
@@ -22,6 +22,7 @@
static inline float linear_activate(float x){return x;}
static inline float logistic_activate(float x){return 1./(1. + exp(-x));}
static inline float relu_activate(float x){return x*(x>0);}
+static inline float elu_activate(float x){return (x >= 0)*x + (x < 0)*(exp(x)-1);}
static inline float relie_activate(float x){return x*(x>0);}
static inline float ramp_activate(float x){return x*(x>0)+.1*x;}
static inline float leaky_activate(float x){return (x>0) ? x : .1*x;}
@@ -36,6 +37,7 @@
static inline float linear_gradient(float x){return 1;}
static inline float logistic_gradient(float x){return (1-x)*x;}
static inline float relu_gradient(float x){return (x>0);}
+static inline float elu_gradient(float x){return (x >= 0) + (x < 0)*(x + 1);}
static inline float relie_gradient(float x){return (x>0) ? 1 : .01;}
static inline float ramp_gradient(float x){return (x>0)+.1;}
static inline float leaky_gradient(float x){return (x>0) ? 1 : .1;}
--
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