zero div handled

user-friendly-metrics.py

@@ -307,9 +307,10 @@ def realize_metrics(metrics_dict,
     
     metrics_dict["precision"] = metrics_dict["tp"]/(metrics_dict["tp"]+metrics_dict["fp"])
     metrics_dict["recall"] = metrics_dict["tp"]/(metrics_dict["tp"]+metrics_dict["fn"])
-    print("Precision: ", metrics_dict["precision"])
-    print("Recall: ", metrics_dict["recall"])
-    metrics_dict["f1"] = 2*metrics_dict["precision"]*metrics_dict["recall"]/(metrics_dict["precision"]+metrics_dict["recall"])
+    if metrics_dict["precision"]+metrics_dict["recall"] == 0:
+        metrics_dict["f1"] = 0
+    else:
+        metrics_dict["f1"] = 2*metrics_dict["precision"]*metrics_dict["recall"]/(metrics_dict["precision"]+metrics_dict["recall"])
 
     for th in recognition_thresholds:
         metrics_dict[f"recognition_{th}"] = metrics_dict[f"recognized_{th}"]/metrics_dict["num_gt_ids"]