NDLI: A Two-Phase Approach to Subscription Subsumption Checking for Content-Based Publish/Subscribe Systems

Content Provider	IEEE Xplore Digital Library
Author	Xiulei Qin Jun Wei Wenbo Zhang Hua Zhong Tao Huang
Copyright Year	2010
Abstract	The efficiency of subscription subsumption checking remains a key issue for content-based publish/subscribe systems. In this paper, we propose an efficient data structure called subscription subsumption graph (SSG). This data structure could differentiate the two types of subsumption relationships and help speed up the process of subsumption checking and subscription cancellation. We then present a two-phase approach to subscription subsumption checking. Phase one is mainly about checking of non-numeric constraints by using an index structure which could help filter out most of irrelevant subscriptions while phase two is about checking of remaining numeric constraints where SSG is employed. Finally, we introduce an efficient SSG-based unsubscription algorithm that could find out which subscriptions need to be forwarded without any redundant computing. We illustrate the advantages of this approach by carrying out extensive experiments.
Starting Page	1278
Ending Page	1285
File Size	395614
Page Count	8
File Format	PDF
ISBN	9781424466955
ISSN	1550445X
e-ISBN	9781424466962
DOI	10.1109/AINA.2010.22
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-04-20
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Subscriptions Data structures Application software Laboratories Computer science Filters Frequency Merging Filling Power system modeling non-numeric constraints subscription subsumption publish/subscribe subscription subsumption graph(SSG) numeric constraints
Content Type	Text

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