fix: metadata

README.md

@@ -18,6 +18,7 @@ dataset_info:
       dtype: 
         class_label:
           names:
+            '0': null
             '1': 1 star
             '2': 2 stars
             '3': 3 stars

convert.py

@@ -104,14 +104,14 @@ def parse_file(filename):
         colon_pos = line.find(":")
         if colon_pos == -1:
             entry["product/category"] = CATEGORIES[filename]
-            yield entry
+            yield clean(entry)
             entry = {}
             continue
         e_name = line[:colon_pos]
         rest = line[colon_pos + 2 :]
         entry[e_name] = rest
 
-    yield entry
+    yield clean(entry)
 
 
 def clean(entry):
@@ -119,12 +119,15 @@ def clean(entry):
     Clean the entry
     """
 
+    if not entry:
+        return entry
+
     if entry["product/price"] == "unknown":
         entry["product/price"] = None
     else:
         entry["product/price"] = float(entry["product/price"])
 
-    entry["review/score"] = int(entry["review/score"])
+    entry["review/score"] = int(float(entry["review/score"]))
     entry["review/time"] = int(entry["review/time"])
     entry["product/category"] = CATEGORIES_LIST.index(entry["product/category"])