added method to get the score of each function

Author: sudhargk

src/layers/logistic_sgd.py

@@ -45,4 +45,7 @@ def errors(self, y):
 			raise NotImplementedError()
 
 	def prediction(self):
-		return self.y_pred;
+		return self.y_pred;
+		
+	def posterior(self):
+		return self.p_y_given_x;

src/models/__init__.py

@@ -164,6 +164,19 @@ def getLabelFunction(self):
 			givens={self.x: in_x},name='labels',
 			allow_input_downcast=True)#,on_unused_input='warn')
 		return fn
+		
+	def getScoreFunction(self):
+		"""
+		Get Function for getting score for each labels
+
+		:returns theano.function
+		A function takes input features 
+		"""
+		in_x = self.x.type('in_x');
+		fn = theano.function(inputs=[in_x],outputs=self.logLayer.posterior(),
+			givens={self.x: in_x},name='score',
+			allow_input_downcast=True)#,on_unused_input='warn')
+		return fn
 
 	def __l1Regularization__(self,start=0):
 		"""