GENERALIZED CONTEXTUAL INTELLIGENCE PLATFORM

One embodiment of the present invention provides a system for providing user information to a recommender. During operation, the system receives, from the recommender, a registration for notification of changes to a context graph. The context graph includes information about user behavior and/or user interests. Next, the system receives, from a mobile device, event data derived from contextual data collected using detectors that detect the mobile device's physical surroundings. The system modifies the context graph based on the event data. The system then determines that the modification to the context graph matches the registration, and sends a notification of context graph change to the recommender.