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What is Complex Event

Chapter 15
Handbook of Research on Mobility and Computing: Evolving Technologies and Ubiquitous Impacts
A complex event can be a gradual and continuous change over time and space, or take on some complex patterns. Thus, it has no clear threshold border with normal environment parameters.
Published in Chapter:
Event Detection in Wireless Sensor Networks
Sohail Anwar (Penn State University, USA) and Chongming Zhang (Shanghai Normal University, China)
Copyright: © 2011 |Pages: 13
DOI: 10.4018/978-1-60960-042-6.ch015
Abstract
Wireless Sensor Networks (WSNs) have experienced an amazing evolution during the last decade. Compared with other wired or wireless networks, wireless sensor networks extend the range of data collection and make it possible for us to get information from every corner of the world. The chapter begins with an introduction to WSNs and their applications. The chapter recognizes event detection as a key component for WSN applications. The chapter provides a structured and comprehensive overview of various techniques used for event detection in WSNs. Existing event detection techniques have been grouped into threshold based and pattern based mechanisms. For each category of event detection mechanism, the chapter surveys some representative technical schemes. The chapter also provides some analyses on the relative strengths and weaknesses of these technical schemes. Towards the end, the trends in the research regarding the event detection in WSNs are described.
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