static void read_dataset(char* fname, CLatentFeatures*& feats, CLatentLabels*& labels)
{
FILE* fd = fopen(fname, "r");
char line[MAX_LINE_LENGTH];
char *pchar, *last_pchar;
int num_examples,label,height,width;
char* path = dirname(fname);
if (fd == NULL)
SG_SERROR("Cannot open input file %s!\n", fname);
fgets(line, MAX_LINE_LENGTH, fd);
num_examples = atoi(line);
labels = new CLatentLabels(num_examples);
SG_REF(labels);
CBinaryLabels* ys = new CBinaryLabels(num_examples);
feats = new CLatentFeatures(num_examples);
SG_REF(feats);
CMath::init_random();
for (int i = 0; (!feof(fd)) && (i < num_examples); ++i)
{
fgets(line, MAX_LINE_LENGTH, fd);
pchar = line;
while ((*pchar)!=' ') pchar++;
*pchar = '\0';
pchar++;
/* label: {-1, 1} */
last_pchar = pchar;
while ((*pchar)!=' ') pchar++;
*pchar = '\0';
label = (atoi(last_pchar) % 2 == 0) ? 1 : -1;
pchar++;
if (ys->set_label(i, label) == false)
SG_SERROR("Couldn't set label for element %d\n", i);
last_pchar = pchar;
while ((*pchar)!=' ') pchar++;
*pchar = '\0';
width = atoi(last_pchar);
pchar++;
last_pchar = pchar;
while ((*pchar)!='\n') pchar++;
*pchar = '\0';
height = atoi(last_pchar);
/* create latent label */
int x = CMath::random(0, width-1);
int y = CMath::random(0, height-1);
CBoundingBox* bb = new CBoundingBox(x,y);
labels->add_latent_label(bb);
SG_SPROGRESS(i, 0, num_examples);
CHOGFeatures* hog = new CHOGFeatures(width, height);
hog->hog = SG_CALLOC(float64_t**, hog->width);
for (int j = 0; j < width; ++j)
{
hog->hog[j] = SG_CALLOC(float64_t*, hog->height);
for (int k = 0; k < height; ++k)
{
char filename[MAX_LINE_LENGTH];
hog->hog[j][k] = SG_CALLOC(float64_t, HOG_SIZE);
sprintf(filename,"%s/%s.%03d.%03d.txt",path,line,j,k);
FILE* f = fopen(filename, "r");
if (f == NULL)
SG_SERROR("Could not open file: %s\n", filename);
for (int l = 0; l < HOG_SIZE; ++l)
fscanf(f,"%lf",&hog->hog[j][k][l]);
fclose(f);
}
}
feats->add_sample(hog);
}
fclose(fd);
labels->set_labels(ys);
SG_SDONE();
}
