Active System for Heterogeneous ODBMS Using Mobile Rule Codes
ADBIS-DASFAA '00 Proceedings of the East-European Conference on Advances in Databases and Information Systems Held Jointly with International Conference on Database Systems for Advanced Applications: Current Issues in Databases and Information Systems
Engineering Event-Based Systems with Scopes
ECOOP '02 Proceedings of the 16th European Conference on Object-Oriented Programming
Moving Active Functionality from Centralized to Open Distributed Heterogeneous Environments
CooplS '01 Proceedings of the 9th International Conference on Cooperative Information Systems
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IEEE Transactions on Computers
Events and streams: harnessing and unleashing their synergy!
Proceedings of the second international conference on Distributed event-based systems
The SpaTeC composite event language for spatio-temporal reasoning in mobile systems
Proceedings of the Third ACM International Conference on Distributed Event-Based Systems
Reliable complex event detection for pervasive computing
Proceedings of the Fourth ACM International Conference on Distributed Event-Based Systems
Towards an event-driven architecture: an infrastructure for event processing position paper
RuleML'05 Proceedings of the First international conference on Rules and Rule Markup Languages for the Semantic Web
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Languages for event specification in centralized systems and their semantics have received considerable attention in the literature. In contrast, very little work exists on extending the semantics of event specification languages to distributed environments.This paper provides a well-defined notion of distributed composite time stamps and their least restricted strict ordering are defined. The ordering is carefully chosen based on mathematical reasoning to ensure the best semantics. The concurrence and weaker-less-than-or-equal temporal relations are also introduced for the expressiveness of ECA rules. Furthermore, a Max operator is introduced for propagating the composite event time stamps. Based on this partial ordering and the Max operator on the time stamps, the semantics of Sentinel composite events is described for distributed event detection.