Fixed a bug in counters_per_class=

src/data.c

@@ -1545,7 +1545,7 @@ data load_data_augment(char **paths, int n, int m, char **labels, int k, tree *h
         int i, j;
         for (i = 0; i < d2.X.rows; ++i) {
 
-            if (mixup == 4) mixup = rand_int(2, 3); // alternate MixUp and CutMix
+            if (mixup == 4) mixup = rand_int(2, 3); // alternate CutMix and Mosaic
 
             // MixUp -----------------------------------
             if (mixup == 1) {

src/gaussian_yolo_layer.c

@@ -341,7 +341,7 @@ void delta_gaussian_yolo_class(float *output, float *delta, int index, int class
     }
     for(n = 0; n < classes; ++n){
         delta[index + stride*n] = ((n == class_id) ? (1 - label_smooth_eps) : (0 + label_smooth_eps/classes)) - output[index + stride*n];
-        if (classes_multipliers) delta[index + stride*class_id] *= classes_multipliers[class_id];
+        if (classes_multipliers && n == class_id) delta[index + stride*class_id] *= classes_multipliers[class_id];
         if(n == class_id && avg_cat) *avg_cat += output[index + stride*n];
     }
 }

src/yolo_layer.c

@@ -250,7 +250,7 @@ void delta_yolo_class(float *output, float *delta, int index, int class_id, int
         // default
         for (n = 0; n < classes; ++n) {
             delta[index + stride*n] = ((n == class_id) ? (1 - label_smooth_eps) : (0 + label_smooth_eps/classes)) - output[index + stride*n];
-            if (classes_multipliers) delta[index + stride*class_id] *= classes_multipliers[class_id];
+            if (classes_multipliers && n == class_id) delta[index + stride*class_id] *= classes_multipliers[class_id];
             if (n == class_id && avg_cat) *avg_cat += output[index + stride*n];
         }
     }