Research on an event specification for event-based collaboration support software architecture

In this paper, we propose an event specification language for event-based collaboration support software architecture, which incorporates some basic concepts, four event operators and four event-occurrence operators to conveniently allow complex event descriptions. The semantics of the language is also studied In the event specification language, we distinguish between event and event occurrence, identify primitive events, and introduce a small number of event operators for constructing composite (or complex) events. The novel aspect of our work lies in supporting a rich set of events and event expressions.