From ec3d050a76ee8c41f35c4531d3fa07a2d9c28ed3 Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Thu, 02 Jun 2016 22:25:24 +0000
Subject: [PATCH] hope i didn't break anything
---
src/blas.c | 27 ++++++++++++++++++++++-----
1 files changed, 22 insertions(+), 5 deletions(-)
diff --git a/src/blas.c b/src/blas.c
index d7948bb..35a4c40 100644
--- a/src/blas.c
+++ b/src/blas.c
@@ -46,7 +46,7 @@
void variance_cpu(float *x, float *mean, int batch, int filters, int spatial, float *variance)
{
- float scale = 1./(batch * spatial);
+ float scale = 1./(batch * spatial - 1);
int i,j,k;
for(i = 0; i < filters; ++i){
variance[i] = 0;
@@ -67,7 +67,7 @@
for(f = 0; f < filters; ++f){
for(i = 0; i < spatial; ++i){
int index = b*filters*spatial + f*spatial + i;
- x[index] = (x[index] - mean[f])/(sqrt(variance[f]) + .00001f);
+ x[index] = (x[index] - mean[f])/(sqrt(variance[f]) + .000001f);
}
}
}
@@ -115,13 +115,30 @@
for(i = 0; i < N; ++i) Y[i*INCY] = X[i*INCX];
}
-void smooth_l1_cpu(int n, float *pred, float *truth, float *delta)
+void smooth_l1_cpu(int n, float *pred, float *truth, float *delta, float *error)
{
int i;
for(i = 0; i < n; ++i){
float diff = truth[i] - pred[i];
- if(fabs(diff) > 1) delta[i] = diff;
- else delta[i] = (diff > 0) ? 1 : -1;
+ float abs_val = fabs(diff);
+ if(abs_val < 1) {
+ error[i] = diff * diff;
+ delta[i] = diff;
+ }
+ else {
+ error[i] = 2*abs_val - 1;
+ delta[i] = (diff < 0) ? -1 : 1;
+ }
+ }
+}
+
+void l2_cpu(int n, float *pred, float *truth, float *delta, float *error)
+{
+ int i;
+ for(i = 0; i < n; ++i){
+ float diff = truth[i] - pred[i];
+ error[i] = diff * diff;
+ delta[i] = diff;
}
}
--
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