Composite event detection method and system for real-time perception environment

Abstract

The invention discloses a composite event detection method and a system for real-time perception environment. Considering influences of system response timing constraint requirements and the event pattern complexity on event pattern matching and response orders, the method assigns priorityto the existing event pattern according to the system response timing requirements andthe event pattern complexity, and the method optimizes the implementation of event pattern match and system response according to composite event priority, so a real-time demand of upper application for the system response in the real-time perception environment. The invention also discloses a composite event detection system forthe real-time perception environment corresponding to the above method.

Description

technical field [0001] The invention belongs to the technical field of composite event processing (CEP), and in particular relates to an event detection method and system that meet the real-time requirements of composite event processing system responses in a real-time sensing environment. Background technique [0002] In existing real-time systems, the system not only requires the logical correctness of data processing, but also requires the completion of data processing tasks within a limited time. With the increase of data, while ensuring the accuracy of data query and processing, timing constraints on the response time of processing data are becoming more and more important. For example, in the RFID system application environment, although the existing RFID event detection technology can realize the timely processing of the event flow, the time for matching each event pattern cannot be effectively constrained and estimated, making the response time of event detection be...

AI Technical Summary

Problems solved by technology

[0005] Considering the impact of system response timing constraints and event pattern complexity on event pattern matching and response sequence, the technical problem to be solved in the present invention is to consider the timing constraints of the response time of the business rule where the event pattern is located and the complexity of the event pattern as Event pattern assignment priority, then, optimize the construction method of the event pattern matching model according to the event pattern priority that can represent different event patterns with different abilities to complete the matching within the given timing constraints, so that a single state appears in the compound event matching model When a node has multiple direct sub-state nodes, it can allow the direct sub-state nodes belonging to the high-priority event mode to perform matching first according to the currently obtained event mode priority; when there is a parallel execution of the system response with multi-step operations, it can avoid The matching of event patterns with low ability to complete matching within a given timing constraint is executed first, which improves the real-time performance of the matching and response execution of the event detection system in the real-time perception environment, so as to meet the requirements of the upper-level application in the real-time perception environment for the system Responses to timing-constrained requirements

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