From c521f87c9eb3ee70258f315ad0d72d7cf174e8b7 Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Mon, 25 May 2015 18:53:10 +0000
Subject: [PATCH] ?
---
src/activations.h | 14 ++++++++++++--
1 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/src/activations.h b/src/activations.h
index 0cb81af..0aa61c2 100644
--- a/src/activations.h
+++ b/src/activations.h
@@ -1,9 +1,10 @@
-#include "cuda.h"
#ifndef ACTIVATIONS_H
#define ACTIVATIONS_H
+#include "cuda.h"
+#include "math.h"
typedef enum{
- LOGISTIC, RELU, LINEAR, RAMP, TANH
+ LOGISTIC, RELU, RELIE, LINEAR, RAMP, TANH, PLSE
}ACTIVATION;
ACTIVATION get_activation(char *s);
@@ -21,14 +22,23 @@
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 relie_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 plse_activate(float x)
+{
+ if(x < -4) return .01 * (x + 4);
+ if(x > 4) return .01 * (x - 4) + 1;
+ return .125*x + .5;
+}
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 relie_gradient(float x){return (x>0) ? 1 : .01;}
static inline float ramp_gradient(float x){return (x>0)+.1;}
static inline float tanh_gradient(float x){return 1-x*x;}
+static inline float plse_gradient(float x){return (x < 0 || x > 1) ? .01 : .125;}
#endif
--
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