ZELESSA: Sensing, Analysing and Acting on Continuous Event Streams

In applications field such as business activity monitoring, telecommunications data management, web personalization and sensor networks event takes the form of continuous event streams. Clients require to sense situations and exceptions in these continuous event stream as opposed to one-time queries to a database. Our research is focused on the following real-time event processing issues: complex event analysis on event streams, QoS-aware event processing services, as well as a novel event stream processing model that seamlessly and efficiently combines event processing services. We have developed ZELESSA, an event stream management system which supports a novel (event stream) processing model. ZELESSA is aimed to continuously receive, process and augment event streams from various source systems in order to calculate in near real-time performance indicators for analytical purposes and intelligent business actions. With our ultimate goal of minimal latency, the system will automatically discover and analyse business situations or exceptions and can create reactive and proactive responses such as generating early warnings, preventing damage/loss and exploiting timecritical business opportunities.