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An Online Adaptive Algorithm for Change Detection in Streaming Sensory Data

Fathy, Y; Barnaghi, P; Tafazolli, R; (2019) An Online Adaptive Algorithm for Change Detection in Streaming Sensory Data. IEEE Systems Journal , 13 (3) 2688 -2699. 10.1109/JSYST.2018.2876461. Green open access

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Abstract

There has been a keen interest in detecting abrupt sequential changes in streaming data obtained from sensors in wireless sensor networks for Internet of Things applications, such as fire/fault detection, activity recognition, and environmental monitoring. Such applications require (near) online detection of instantaneous changes. This paper proposes an online, adaptive filtering-based change detection (OFCD) algorithm. Our method is based on a convex combination of two decoupled least mean square windowed filters with differing sizes. Both filters are applied independently on data streams obtained from sensor nodes such that their convex combination parameter is employed as an indicator of abrupt changes in mean values. An extension of our method (OFCD) based on a cooperative scheme between multiple sensors (COFCD) is also presented. It provides an enhancement of both convergence and steady-state accuracy of the convex weight parameter. Our conducted experiments show that our approach can be applied in distributed networks in an online fashion. It also provides better performance and less complexity compared with the state-of-the-art on both of single and multiple sensors.

Type: Article
Title: An Online Adaptive Algorithm for Change Detection in Streaming Sensory Data
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/JSYST.2018.2876461
Publisher version: https://doi.org/10.1109/JSYST.2018.2876461
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Monitoring, Wireless sensor networks, Change detection algorithms, Delays, Microsoft Windows, Sensor systems
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
URI: https://discovery.ucl.ac.uk/id/eprint/10062676
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