@@ -67,17 +67,14 @@ class BaseLearner(metaclass=_RequireAttrsABCMeta):

     Attributes

     ----------

     function : callable: X → Y

-        The function to learn.

+        The function to learn, the ``learner`` might modify

+        the original function.

     data : dict: X → Y

         `function` evaluated at certain points.

-        The values can be 'None', which indicates that the point

-        will be evaluated, but that we do not have the result yet.

-    npoints : int, optional

-        The number of evaluated points that have been added to the learner.

-        Subclasses do not *have* to implement this attribute.

-    pending_points : set, optional

+    pending_points : set

         Points that have been requested but have not been evaluated yet.

-        Subclasses do not *have* to implement this attribute.

+    npoints : int

+        The number of evaluated points that have been added to the learner.

     Notes

     -----