Update src/saving_utils.py

src/saving_utils.py

@@ -12,7 +12,7 @@ def save_similarity_output(output_dict, method_name, leaderboard_path="./data/le
     if os.path.exists(leaderboard_path):
         leaderboard_df = pd.read_csv(leaderboard_path)
     else:
-        leaderboard_df = pd.DataFrame()
+        leaderboard_df = pd.DataFrame(columns=['Method'])
 
     if os.path.exists(similarity_path):
         similarity_df = pd.read_csv(similarity_path)