@@ -71,7 +71,7 @@ class BalancingLearner(BaseLearner):

             for index, learner in enumerate(self.learners):

                 if index not in self._points:

                     self._points[index] = learner.ask(

-                        n=1, add_data=False)

+                        n=1, tell_pending=False)

                 point, loss_improvement = self._points[index]

                 improvements_per_learner.append(loss_improvement[0])

                 pairs.append((index, point[0]))

@@ -79,13 +79,13 @@ class BalancingLearner(BaseLearner):

                        key=itemgetter(1))

             points.append(x)

             loss_improvements.append(l)

-            self.tell(x, None)

+            self.tell_pending(x)

         return points, loss_improvements

-    def ask(self, n, add_data=True):

+    def ask(self, n, tell_pending=True):

         """Chose points for learners."""

-        if not add_data:

+        if not tell_pending:

             with restore(*self.learners):

                 return self._ask_and_tell(n)

         else:

@@ -97,6 +97,12 @@ class BalancingLearner(BaseLearner):

         self._loss.pop(index, None)

         self.learners[index].tell(x, y)

+    def tell_pending(self, x):

+        index, x = x

+        self._points.pop(index, None)

+        self._loss.pop(index, None)

+        self.learners[index].tell_pending(x)

+

     def loss(self, real=True):

         losses = []

         for index, learner in enumerate(self.learners):