From 00d483697a6e395ef6776320cd1e52a04f4367be Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Wed, 30 Apr 2014 23:17:40 +0000
Subject: [PATCH] Small updates
---
src/convolutional_layer.c | 86 ++----------------------------------------
1 files changed, 5 insertions(+), 81 deletions(-)
diff --git a/src/convolutional_layer.c b/src/convolutional_layer.c
index 6916eeb..45bb54a 100644
--- a/src/convolutional_layer.c
+++ b/src/convolutional_layer.c
@@ -96,33 +96,14 @@
convolutional_out_width(layer)*
layer.batch;
- memset(layer.output, 0, m*n*sizeof(float));
-
float *a = layer.filters;
float *b = layer.col_image;
float *c = layer.output;
for(i = 0; i < layer.batch; ++i){
im2col_cpu(in+i*(n/layer.batch), layer.c, layer.h, layer.w, layer.size, layer.stride, b+i*(n/layer.batch));
}
- gemm(0,0,m,n,k,1,a,k,b,n,1,c,n);
-
- for(i = 0; i < m*n; ++i){
- layer.output[i] = activate(layer.output[i], layer.activation);
- }
- //for(i = 0; i < m*n; ++i) if(i%(m*n/10+1)==0) printf("%f, ", layer.output[i]); printf("\n");
-
-}
-
-void gradient_delta_convolutional_layer(convolutional_layer layer)
-{
- int i;
- int size = convolutional_out_height(layer)*
- convolutional_out_width(layer)*
- layer.n*
- layer.batch;
- for(i = 0; i < size; ++i){
- layer.delta[i] *= gradient(layer.output[i], layer.activation);
- }
+ gemm(0,0,m,n,k,1,a,k,b,n,0,c,n);
+ activate_array(layer.output, m*n, layer.activation);
}
void learn_bias_convolutional_layer(convolutional_layer layer)
@@ -143,13 +124,13 @@
void learn_convolutional_layer(convolutional_layer layer)
{
- gradient_delta_convolutional_layer(layer);
- learn_bias_convolutional_layer(layer);
int m = layer.n;
int n = layer.size*layer.size*layer.c;
int k = convolutional_out_height(layer)*
convolutional_out_width(layer)*
layer.batch;
+ gradient_array(layer.output, m*k, layer.activation, layer.delta);
+ learn_bias_convolutional_layer(layer);
float *a = layer.delta;
float *b = layer.col_image;
@@ -171,9 +152,7 @@
float *b = layer.delta;
float *c = layer.col_image;
-
- memset(c, 0, m*n*sizeof(float));
- gemm(1,0,m,n,k,1,a,m,b,n,1,c,n);
+ gemm(1,0,m,n,k,1,a,m,b,n,0,c,n);
memset(delta, 0, layer.batch*layer.h*layer.w*layer.c*sizeof(float));
for(i = 0; i < layer.batch; ++i){
@@ -194,61 +173,6 @@
layer.filter_updates[i] *= momentum;
}
}
-/*
-
-void backward_convolutional_layer2(convolutional_layer layer, float *input, float *delta)
-{
- image in_delta = float_to_image(layer.h, layer.w, layer.c, delta);
- image out_delta = get_convolutional_delta(layer);
- int i,j;
- for(i = 0; i < layer.n; ++i){
- rotate_image(layer.kernels[i]);
- }
-
- zero_image(in_delta);
- upsample_image(out_delta, layer.stride, layer.upsampled);
- for(j = 0; j < in_delta.c; ++j){
- for(i = 0; i < layer.n; ++i){
- two_d_convolve(layer.upsampled, i, layer.kernels[i], j, 1, in_delta, j, layer.edge);
- }
- }
-
- for(i = 0; i < layer.n; ++i){
- rotate_image(layer.kernels[i]);
- }
-}
-
-
-void learn_convolutional_layer(convolutional_layer layer, float *input)
-{
- int i;
- image in_image = float_to_image(layer.h, layer.w, layer.c, input);
- image out_delta = get_convolutional_delta(layer);
- gradient_delta_convolutional_layer(layer);
- for(i = 0; i < layer.n; ++i){
- kernel_update(in_image, layer.kernel_updates[i], layer.stride, i, out_delta, layer.edge);
- layer.bias_updates[i] += avg_image_layer(out_delta, i);
- }
-}
-
-void update_convolutional_layer(convolutional_layer layer, float step, float momentum, float decay)
-{
- int i,j;
- for(i = 0; i < layer.n; ++i){
- layer.bias_momentum[i] = step*(layer.bias_updates[i])
- + momentum*layer.bias_momentum[i];
- layer.biases[i] += layer.bias_momentum[i];
- layer.bias_updates[i] = 0;
- int pixels = layer.kernels[i].h*layer.kernels[i].w*layer.kernels[i].c;
- for(j = 0; j < pixels; ++j){
- layer.kernel_momentum[i].data[j] = step*(layer.kernel_updates[i].data[j] - decay*layer.kernels[i].data[j])
- + momentum*layer.kernel_momentum[i].data[j];
- layer.kernels[i].data[j] += layer.kernel_momentum[i].data[j];
- }
- zero_image(layer.kernel_updates[i]);
- }
-}
-*/
void test_convolutional_layer()
{
--
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