%0 Journal Article
%T In-Network Outlier Detection in Wireless Sensor Networks
%A Joel W. Branch
%A Chris Giannella
%A Boleslaw Szymanski
%A Ran Wolff
%A Hillol Kargupta
%J Computer Science
%D 2009
%I arXiv
%R 10.1007/s10115-011-0474-5
%X To address the problem of unsupervised outlier detection in wireless sensor networks, we develop an approach that (1) is flexible with respect to the outlier definition, (2) computes the result in-network to reduce both bandwidth and energy usage,(3) only uses single hop communication thus permitting very simple node failure detection and message reliability assurance mechanisms (e.g., carrier-sense), and (4) seamlessly accommodates dynamic updates to data. We examine performance using simulation with real sensor data streams. Our results demonstrate that our approach is accurate and imposes a reasonable communication load and level of power consumption.
%U http://arxiv.org/abs/0909.0685v1