--- a/learner.py	Wed May 07 20:51:24 2008 -0400
+++ b/learner.py	Wed May 07 21:22:56 2008 -0400
@@ -1,6 +1,7 @@
 
-from dataset import AttributesHolder
+from dataset import AttributesHolder,AbstractFunction
 import compile
+from theano import tensor as t
     
 class Learner(AttributesHolder):
     """Base class for learning algorithms, provides an interface
@@ -136,9 +137,9 @@
         of (optionally copies) values of attributes.
         """
         if return_copy:
-            return [copy.deepcopy(self.__getattr__(name).data) for name in names]
+            return [copy.deepcopy(self.__getattribute__(name).data) for name in names]
         else:
-            return [self.__getattr__(name).data for name in names]
+            return [self.__getattribute__(name).data for name in names]
 
     def updateInputAttributes(self):
         """
@@ -252,7 +253,7 @@
         Private helper function that maps a list of attribute names to a list
         of corresponding Op Results (with the same name but with a '_' prefix).
         """
-        return [self.__getattr__('_'+name).data for name in names]
+        return [self.__getattribute__('_'+name).data for name in names]
 
 
 class MinibatchUpdatesTLearner(TLearner):
@@ -355,7 +356,7 @@
         self.updateEnd()
         return self.use
 
-class OnlineGradientBasedTLearner(MinibatchUpdatesTLearner):
+class OnlineGradientTLearner(MinibatchUpdatesTLearner):
     """
     Specialization of MinibatchUpdatesTLearner in which the minibatch updates
     are obtained by performing an online (minibatch-based) gradient step.
@@ -376,14 +377,14 @@
         self.truly_online=truly_online
 
         # create the formulas for the gradient update
-        old_params = [self.__getattr__("_"+name) for name in self.parameterAttributes()]
+        old_params = [self.__getattribute__("_"+name) for name in self.parameterAttributes()]
         new_params_names = ["_new_"+name for name in self.parameterAttributes()]
-        loss = self.__getattr__(self.lossAttribute())
+        loss = self.__getattribute__("_"+self.lossAttribute())
         self.setAttributes(new_params_names,
-                           [t.add_inplace(self.param,
-                                          self._learning_rate*t.grad(loss,param))
+                           [t.add_inplace(param,self._learning_rate*t.grad(loss,param))
                             for param in old_params])
-
+        MinibatchUpdatesTLearner.__init__(self)
+        
     def isLastEpoch(self):
         return self.truly_online