challenge sets: abstractivity and topic diversity

wiki_cat_sum.py

@@ -91,7 +91,7 @@ class WikiCatSum(datasets.GeneratorBasedBuilder):
                 "summary": datasets.features.Sequence(
                     {
                         "text": datasets.Value("string"),
-                        "topic": datasets.Value("int"),
+                        "topic": datasets.Value("int16"),
                     })
                 # These are the features of your dataset like images, labels ...
             }