From 4af116e996fe04b739bf6eee211be36660c212f4 Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Sat, 21 Mar 2015 19:25:14 +0000
Subject: [PATCH] gonna change im2col
---
src/activations.h | 9 ++++++++-
1 files changed, 8 insertions(+), 1 deletions(-)
diff --git a/src/activations.h b/src/activations.h
index 0cb81af..f28ac0d 100644
--- a/src/activations.h
+++ b/src/activations.h
@@ -3,7 +3,7 @@
#define ACTIVATIONS_H
typedef enum{
- LOGISTIC, RELU, LINEAR, RAMP, TANH
+ LOGISTIC, RELU, LINEAR, RAMP, TANH, PLSE
}ACTIVATION;
ACTIVATION get_activation(char *s);
@@ -23,12 +23,19 @@
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 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 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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