Location-Based Information Delivery Using Stream Processing Engine

Recent developments in network and sensor device technologies enable us to easily obtain real-world information, such as locations of moving objects and environment information including brightness and temperature. These data are continuously supplied as they change over time, and they are regarded as data streams. The requirements for online processing of such data streams are increasing. In this demonstration, we present location-based information delivery using StreamSpinner, our stream processing engine. StreamSpinner achieves efficient stream data processing based on novel multiple continuous query optimization techniques. Using the StreamSpinner API, we built a location-based information delivery system for exhibition visitors. Locations of exhibition visitors are continuously monitored and supplied as data streams. Useful information about nearby exhibits and the availability of exhibition hall facilities is provided by the system to visitor terminals. Online integration of streams and database contents is achieved in the demonstration system.