Use of Event Detection Approaches for Outlier Detection in Wireless Sensor Networks


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Bahrepour, Majid and Zhang, Yang and Meratnia, Nirvana and Havinga, Paul J.M. (2009) Use of Event Detection Approaches for Outlier Detection in Wireless Sensor Networks. In: Symposium on Theoretical and Practical Aspects of Large-scale Wireless Sensor Networks, The 5th International Conference on Intelligent Sensors, Sensor Networks and Information Processing, ISSNIP, 7-10 Dec 2009, Melbourne, Australia. (In Press)

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Abstract:Outliers or anomalies are generally considered to be those observations that are considerably diverged from normal pattern of data. Due to their special characteristics, e.g. constrained available resources, frequent physical failure, and often harsh deployment area, wireless sensor networks (WSNs) are more likely to generate outliers compared to their other wireless counterparts. Potential sources of deviated data in a series of measurements are errors, events, and/or malicious attacks on the network. Current studies tend to handle events and errors separately and propose different techniques for event detection as for outlier detection. By bringing the concept of outlier and event close together and assuming that events are some sorts of outliers, in this paper, we investigate applicability of pattern matching-based event detection techniques for outlier detection. Through extensive experiments, we evaluate performance of various event detection techniques to detect outliers and compare them with a recent outlier detection study.
Item Type:Conference or Workshop Item
Copyright:© 2009 IEEE
Faculty:
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/68745
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