fix evaluation bug

examples/run_squad.py

@@ -336,7 +336,9 @@ def main():
         output_args_file = os.path.join(args.output_dir, 'training_args.bin')
         torch.save(args, output_args_file)
     else:
-        model = BertForQuestionAnswering.from_pretrained(args.bert_model)
+        # Load a trained model and vocabulary that you have fine-tuned
+        model = BertForQuestionAnswering.from_pretrained(args.output_dir)
+        tokenizer = BertTokenizer.from_pretrained(args.output_dir, do_lower_case=args.do_lower_case)
 
     model.to(device)