Update Yelpdata_663.py

Yelpdata_663.py

@@ -124,6 +124,6 @@ class YelpDataset(datasets.GeneratorBasedBuilder):
                 for key, value in row.items():
                     if value == '':
                         # Assuming all fields that can be empty are floats; adjust as needed
-                        row[key] = 0.0  # Or `None`, depending on how you want to handle missing values
+                        row[key] = None
                 yield i, row