Big Data

Chapter 14

Managing Big Trajectory Data

Online Processing of Positional Streams

Kostas Patroumpas and Timos Sellis

Abstract

As smartphones and GPS-enabled devices proliferate, location-based services become all the more important in social networking, mobile applications, advertising, traffic monitoring, and many other domains. Managing the locations and trajectories of numerous people, vehicles, vessels, commodities, and so forth must be efficient and robust, since this information must be processed online and should provide answers to users’ requests in real time. In this geostreaming context, such long-running continuous queries must be repeatedly evaluated against the most recent positions relayed by moving objects, for instance, reporting ...