4. The method of claim 1 , wherein a first probability list of the plurality of probability lists is generated based upon known user attributes from a set of user nodes of the social graph that are connected to the user node through a set of edges.
4. The method of claim 1 , wherein a first probability list of the plurality of probability lists is generated based upon known user attributes from a set of user nodes of the social graph that are connected to the user node through a set of edges. 5. The method of claim 4 , wherein the first probability list is further generated based upon a set of concept nodes of the social graph that are connected to the set of user nodes through a second set of edges.