From 0df9d25c46e39fa5f532c023261784fdcdd5d25d Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Thu, 11 Jun 2015 22:51:17 +0000
Subject: [PATCH] new cfg files for classification
---
src/activations.c | 50 ++++++++++++++++++++++++++++++--------------------
1 files changed, 30 insertions(+), 20 deletions(-)
diff --git a/src/activations.c b/src/activations.c
index 24868a3..8b607c2 100644
--- a/src/activations.c
+++ b/src/activations.c
@@ -2,21 +2,26 @@
#include <math.h>
#include <stdio.h>
+#include <stdlib.h>
#include <string.h>
char *get_activation_string(ACTIVATION a)
{
switch(a){
- case SIGMOID:
- return "sigmoid";
+ case LOGISTIC:
+ return "logistic";
case RELU:
return "relu";
+ case RELIE:
+ return "relie";
case RAMP:
return "ramp";
case LINEAR:
return "linear";
case TANH:
return "tanh";
+ case PLSE:
+ return "plse";
default:
break;
}
@@ -25,8 +30,10 @@
ACTIVATION get_activation(char *s)
{
- if (strcmp(s, "sigmoid")==0) return SIGMOID;
+ if (strcmp(s, "logistic")==0) return LOGISTIC;
if (strcmp(s, "relu")==0) return RELU;
+ if (strcmp(s, "relie")==0) return RELIE;
+ if (strcmp(s, "plse")==0) return PLSE;
if (strcmp(s, "linear")==0) return LINEAR;
if (strcmp(s, "ramp")==0) return RAMP;
if (strcmp(s, "tanh")==0) return TANH;
@@ -34,24 +41,23 @@
return RELU;
}
-float linear_activate(float x){return x;}
-float sigmoid_activate(float x){return 1./(1. + exp(-x));}
-float relu_activate(float x){return x*(x>0);}
-float ramp_activate(float x){return x*(x>0)+.1*x;}
-float tanh_activate(float x){return (exp(2*x)-1)/(exp(2*x)+1);}
-
-float activate(float x, ACTIVATION a){
+float activate(float x, ACTIVATION a)
+{
switch(a){
case LINEAR:
return linear_activate(x);
- case SIGMOID:
- return sigmoid_activate(x);
+ case LOGISTIC:
+ return logistic_activate(x);
case RELU:
return relu_activate(x);
+ case RELIE:
+ return relie_activate(x);
case RAMP:
return ramp_activate(x);
case TANH:
return tanh_activate(x);
+ case PLSE:
+ return plse_activate(x);
}
return 0;
}
@@ -64,19 +70,23 @@
}
}
-
-float gradient(float x, ACTIVATION a){
+float gradient(float x, ACTIVATION a)
+{
switch(a){
case LINEAR:
- return 1;
- case SIGMOID:
- return (1.-x)*x;
+ return linear_gradient(x);
+ case LOGISTIC:
+ return logistic_gradient(x);
case RELU:
- return (x>0);
+ return relu_gradient(x);
+ case RELIE:
+ return relie_gradient(x);
case RAMP:
- return (x>0) + .1;
+ return ramp_gradient(x);
case TANH:
- return 1-x*x;
+ return tanh_gradient(x);
+ case PLSE:
+ return plse_gradient(x);
}
return 0;
}
--
Gitblit v1.10.0