CSE Publications - Report Abstract
CSE-2004-3
Title : Estreams: Towards an Integrated Model for Event and Stream Processing
Type : Technical Report
Author(s) : Qingchun Jiang, Raman Adaikkalavan, and Sharma Chakravarthy
Abstract : In this paper, we analyze the similarities and differences between the event and stream processing models. Although research seems to address different types of applications, there are a number of similarities and differences between the two models. We argue that for most of the applications considered for stream processing, event component is needed and is not currently supported. By synthesizing these two and combining their strengths, we argue that the integrated model will be better than the sum of its parts. We then propose our integrated model and its computation to combine the capabilities of both models for applications that require not only to monitor changes through continuous queries, but also to express and process complex events generated by continuous queries. We introduce the notion of a semantic window, which significantly extends the current window concept for continuous queries, and stream modifiers in order to extend current stream computation model for complicated change detection. We further discuss the extension of event specification to include continuous queries. Finally, we discuss the implementation of our integrated model using the MavStream system and the Local Event Detector of Sentinel.