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Research at St Andrews

Detecting abnormal events on binary sensors in smart home environments

Research output: Contribution to journalArticle

Author(s)

Juan Ye, Graeme Stevenson, Simon Dobson

School/Research organisations

Abstract

With a rising ageing population, smart home technologies have been demonstrated as a promising paradigm to enable technology-driven healthcare delivery. Smart home technologies, composed of advanced sensing, computing, and communication technologies, offer an unprecedented opportunity to keep track of behaviours and activities of the elderly and provide context-aware services that enable the elderly to remain active and independent in their own homes. However, experiments in developed prototypes demonstrate that abnormal sensor events hamper the correct identification of critical (and potentially life-threatening) situations, and that existing learning, estimation, and time-based approaches to situation recognition are inaccurate and inflexible when applied to multiple people sharing a living space. We propose a novel technique, called CLEAN, that integrates the semantics of sensor readings with statistical outlier detection. We evaluate the technique against four real-world datasets across different environments including the datasets with multiple residents. The results have shown that CLEAN can successfully detect sensor anomaly and improve activity recognition accuracies.
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Details

Original languageEnglish
Pages (from-to)32-49
Number of pages18
JournalPervasive and Mobile Computing
Volume33
Early online date29 Jun 2016
DOIs
Publication statusPublished - Dec 2016

    Research areas

  • Ontologies, Smart home, Fault detection, Semantics, Domain knowledge

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