Abstract
Understanding and recognizing human activities from sensor readings is an important task in pervasive computing. Existing work on activity recognition mainly focuses on recognizing activities for a single user in a smart home environment. However, in real life, there are often multiple inhabitants live in such an environment. Recognizing activities of not only a single user, but also multiple users is essential to the development of practical context-aware applications in pervasive computing. In this paper, we investigate the fundamental problem of recognizing activities for multiple users from sensor readings in a home environment, and propose a novel pattern mining approach to recognize both single-user and multi-user activities in a unified solution. We exploit emerging pattern -a type of knowledge pattern that describes significant changes between classes of data - for constructing our activity models, and propose an emerging pattern based multi-user activity recognizer (epMAR) to recognize both single-user and multiuser activities. We conduct our empirical studies by collecting real-world activity traces done by two volunteers over a period of two weeks in a smart home environment, and analyze the performance in detail with respect to various activity cases in a multi-user scenario. Our experimental results demonstrate that our epMAR recognizer achieves an average accuracy of 89.72% for all the activity cases.
Original language | English |
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Title of host publication | 6th Annual International Conference on Mobile and Ubiquitous Systems: Networking Services (MobiQuitous 2009) |
Place of Publication | Gent, Belgium |
Publisher | ICST (Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering) |
Pages | 1-10 |
Number of pages | 10 |
ISBN (Print) | 9789639799592 |
DOIs | |
Publication status | Published - 2009 |
Externally published | Yes |
Event | International Conference on Mobile and Ubiquitous Systems: Networking & Services (6th: 2009) - Toronto, Canada Duration: 13 Jul 2009 → 16 Jul 2009 |
Conference
Conference | International Conference on Mobile and Ubiquitous Systems: Networking & Services (6th: 2009) |
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Abbreviated title | MobiQuitous 2009 |
Country/Territory | Canada |
City | Toronto |
Period | 13/07/09 → 16/07/09 |