A Parameterized Algebra for Event Notification Services Annika Hinze and Agnès Voisard   View Paper (PDF)   Return to Poster Session Abstract Event notification services are used in various applications such as digital libraries, stock tickers, traffic control, or facility management. However to our knowledge, a common semantics of events in event notification services has not been defined so far. We propose a parameterized event algebra which describes the semantics of composite events for event notification systems. The parameters serve as a basis for flexible handling of duplicates in both primitive and composite events. DiSC'03 © 2003 Association for Computing Machinery