Detecting activities from body-worn accelerometers via instance-based algorithms

  • Authors:
  • Nicola Bicocchi;Marco Mamei;Franco Zambonelli

  • Affiliations:
  • Dipartimento di Scienze e Metodi dell'Ingegneria, University of Modena and Reggio, Emilia 42100, Italy;Dipartimento di Scienze e Metodi dell'Ingegneria, University of Modena and Reggio, Emilia 42100, Italy;Dipartimento di Scienze e Metodi dell'Ingegneria, University of Modena and Reggio, Emilia 42100, Italy

  • Venue:
  • Pervasive and Mobile Computing
  • Year:
  • 2010

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Abstract

The automatic and unobtrusive identification of user activities is one of the most challenging goals of context-aware computing. This paper discusses and experimentally evaluates instance-based algorithms to infer user activities on the basis of data acquired from body-worn accelerometer sensors. We show that instance-based algorithms can classify simple and specific activities with high accuracy. In addition, due to their low requirements, we show how they can be implemented on severely resource-constrained devices. Finally, we propose mechanisms to take advantage of the temporal dimension of the signal, and to identify novel activities at run time.