Update negbleurt.py

negbleurt.py

@@ -62,6 +62,7 @@ class NegBLEURT(evaluate.Metric):
         self, predictions, references, batch_size=16
     ):
         single_ref = isinstance(references, str)
+        print(single_ref, references)
         if single_ref:
             print("single reference")
             references = [references] * len(predictions)