Foundations of Complex Event Processing

Complex Event Processing (CEP) has emerged as the unifying field for technologies that require processing and correlating heterogeneous distributed data sources in real-time. CEP finds applications in diverse domains, which has resulted in a large number of proposals for expressing and processing complex events. However, existing CEP frameworks are based on ad-hoc solutions that do not rely on solid theoretical ground, making them hard to understand, extend or generalize. Moreover, they are usually presented as application programming interfaces documented by examples, and using each of them requires learning a different