Update Mimic4Dataset.py

Mimic4Dataset.py

@@ -944,8 +944,8 @@ class Mimic4Dataset(datasets.GeneratorBasedBuilder):
         features = datasets.Features(
             {
                 "label": datasets.ClassLabel(num_classes=2,names=["0", "1"]),
-                "DEMO": datasets.Array2D(shape=(1, 4), dtype="int64"),
-                "COND" : datasets.Array2D(shape=(1, 1025), dtype='int64') ,
+                "DEMO": datasets.Array2D(shape=(None, 4), dtype="int64"),
+                "COND" : datasets.Array2D(shape=(None, 1025), dtype='int64') ,
                 "MEDS" : datasets.Array2D(shape=(None, self.size_meds), dtype='int64') ,
                 "PROC" : datasets.Array2D(shape=(None, self.size_proc), dtype='int64') ,
                 "CHART" : datasets.Array2D(shape=(None, self.size_chart), dtype='int64') ,