diff --git a/data/maker/__init__.py b/data/maker/__init__.py
index 056cbbc..71d9c7b 100644
--- a/data/maker/__init__.py
+++ b/data/maker/__init__.py
@@ -98,6 +98,10 @@ class Learner(Process):
         # - The code below tries to address the issue (Perhaps better suited for the reading components)
         _log = {}
         for name in columns :
+            #
+            # randomly sampling 5 elements to make sense of data-types
+            if self._df[name].size < 5 :
+                continue
             _index = np.random.choice(np.arange(self._df[name].size),5,False)
             no_value = [type(value) in [int,float,np.int64,np.int32,np.float32,np.float64] for value in self._df[name].values[_index]]            
             no_value = 0 if np.sum(no_value) > 0 else ''