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i've tested, now you can too

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This commit is contained in:
Brian West
2012-12-20 20:08:42 -06:00
parent d3fcfa8245
commit d67b96af8a
94 changed files with 25305 additions and 2005 deletions
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29
libs/libcodec2/unittest/vqtrain.c
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@@ -23,8 +23,7 @@
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/*-----------------------------------------------------------------------*\
@@ -38,6 +37,7 @@
#include <string.h>
#include <math.h>
#include <ctype.h>
#include <assert.h>
/*-----------------------------------------------------------------------*\
@@ -59,7 +59,7 @@ void acc(float v1[], float v2[], int k);
void norm(float v[], int k, long n);
long quantise(float cb[], float vec[], int k, int m, float *se);
/*-----------------------------------------------------------------------*\
/*-----------------------------------------------------------------------* \
MAIN
@@ -79,12 +79,13 @@ int main(int argc, char *argv[]) {
float delta; /* improvement in distortion */
FILE *ftrain; /* file containing training set */
FILE *fvq; /* file containing vector quantiser */
int ret;
/* Interpret command line arguments */
if (argc != 5) {
printf("usage: vqtrain TrainFile K M VQFile\n");
exit(0);
printf("usage: %s TrainFile K(dimension) M(codebook size) VQFile\n", argv[0]);
exit(1);
}
/* Open training file */
@@ -99,7 +100,7 @@ int main(int argc, char *argv[]) {
k = atol(argv[2]);
m = atol(argv[3]);
printf("dimension K=%ld number of entries M=%ld\n", k,m);
printf("dimension K=%ld number of entries M=%ld\n", k, m);
vec = (float*)malloc(sizeof(float)*k);
cb = (float*)malloc(sizeof(float)*k*m);
cent = (float*)malloc(sizeof(float)*k*m);
@@ -112,14 +113,14 @@ int main(int argc, char *argv[]) {
/* determine size of training set */
J = 0;
while(fread(vec, sizeof(float), k, ftrain) == k)
while(fread(vec, sizeof(float), k, ftrain) == (size_t)k)
J++;
printf("J=%ld entries in training set\n", J);
/* set up initial codebook state from samples of training set */
rewind(ftrain);
fread(cb, sizeof(float), k*m, ftrain);
ret = fread(cb, sizeof(float), k*m, ftrain);
/* main loop */
@@ -140,7 +141,7 @@ int main(int argc, char *argv[]) {
se = 0.0;
rewind(ftrain);
for(i=0; i<J; i++) {
fread(vec, sizeof(float), k, ftrain);
ret = fread(vec, sizeof(float), k, ftrain);
ind = quantise(cb, vec, k, m, &se);
n[ind]++;
acc(&cent[ind*k], vec, k);
@@ -151,7 +152,7 @@ int main(int argc, char *argv[]) {
printf("\r Iteration %ld, Dn = %f, Delta = %e\n", j, Dn, delta);
j++;
/* determine new codebook from centriods */
/* determine new codebook from centroids */
if (delta > DELTAQ)
for(i=0; i<m; i++) {
@@ -171,6 +172,7 @@ int main(int argc, char *argv[]) {
exit(1);
}
fprintf(fvq,"%ld %ld\n",k,m);
for(j=0; j<m; j++) {
for(i=0; i<k; i++)
fprintf(fvq,"%f ",cb[j*k+i]);
@@ -277,13 +279,16 @@ long quantise(float cb[], float vec[], int k, int m, float *se)
float beste; /* best error so far */
long j;
int i;
float diff;
besti = 0;
beste = 1E32;
for(j=0; j<m; j++) {
e = 0.0;
for(i=0; i<k; i++)
e += pow(cb[j*k+i]-vec[i],2.0);
for(i=0; i<k; i++) {
diff = cb[j*k+i]-vec[i];
e += pow(diff,2.0);
}
if (e < beste) {
beste = e;
besti = j;