Update isolet.py

isolet.py

@@ -78,7 +78,7 @@ class Isolet(datasets.GeneratorBasedBuilder):
         data.columns = [str(i) for i in range(618)]
         
         data = data.astype({"617": "int8"})
-        data.loc[:, "617"] = data["617"].apply(int)
+        data.loc[:, "617"] = data["617"].apply(lambda x: int(x) - 1)
         data = data.astype({str(i): "float64" for i in range(617)})
 
         print(data.dtypes)