EXTRACTING PERSONAL USER CONTEXT WITH A THREE-AXIS SENSOR MOUNTED ON A FREELY CARRIED CELL PHONE

Toshiki Iso, Kenichi Yamazaki

2006

Abstract

To realize ubiquitous services such as presence services and health care services, we propose an algorithm to extract ”personal user context” such as user’s behavior; it processes information gathered by a three-axis accelerometer mounted on a cell phone. Our algorithm has two main functions; one is to extract feature vectors by analyzing sensor data in detail by wavelet packet decomposition. The other is to flexibly cluster personal user context by combining a self-organizing algorithm with Bayesian theory. A prototype that implements the algorithm is constructed. Experiments on the prototype show that the algorithm can identify personal user contexts such as walking, running, going up/down stairs, and walking fast with an accuracy of about 88[%].

References

  1. Clarkson, B., Mase, K., and Pentland, A. (2000). Recognizing user's context from wearable sensor's: Baseline system. Technical Report 519.
  2. Healey, J. and Logan, B. itoring Using ECG http://www.hpl.hp.com/techreports/2005/HPL-2005- 134.pdf.
  3. Ishikawa, Y. (2000). Wavelet Analysis for Clinical Medicine. IGAKU-SHUPPAN.
  4. Iso, T., Kawasaki, N., and Kurakake, S. (2005). Personal context extractor with multiple sensors on a cell phone. In 7th IFIP International Conference on Mobile and Wireless Communications Networks, 2005.
  5. K. V. Laerhoven, A. Schmidt, H. W. G. (2003). Limitations of multi-sensor context-aware clothing. 7(3).
  6. Kern, N., Antifakos, S., Schiele, B., and Schwaninger, A. (2004). A model for human interruptability: experimental evaluation and automatic estimation from wearable sensors. In 8th IEEE International Symposium on Wearable Computers.
  7. Kohonen., T. SOM Toolbox 2.0. The Laboratory of Information and Computer Science in the Helsinki University of Technology, http://www.cis.hut.fi/projects/somtoolbox/.
  8. Krause, A., Siewiorek, D. P., Smailagic, A., and Farringdon, J. (2003). Unsupervised, dynamic identification of physiological and activity context in wearable computing. In 7th IEEE International Symposium on Wearable Computers, pages 8-17.
  9. M. Unuma, K. Kurata, A. T. T. H. (2004). Autonomy position detection by using recognition of human walking motion. J87-A(1):78-86.
  10. Miao, T., Shimizu, T., Miyake, S., Hashimoto, M., and Shimoyama, O. (2003). Alteractions of complexity measures during subsidiary task in multi-attribute operations. In Human Interface Symposium, pages 791- 792.
  11. Randell, C. and Muller, H. (2000). Context awareness by analysing accelerometer data. Technical Report CSTR-00-009.
  12. Si, H., Kawahara, Y., Kurasawa, H., Morikawa, H., and Aoyama, T. (2005). A context-aware collaborative filtering algorithm for real world oriented content delivery service. In Ubicom2005 Metapolis and Urban Life Workshop.
  13. Siewiorek, D., Smailagic, A., Furukawa, J., Krause, A., Moraveji, N., Reiger, K., Shaffer, J., and Wong, F. L. (2003). Sensay: A context-aware mobile phone. In 7th IEEE International Symposium on Wearable Computers, pages 248-257.
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Paper Citation


in Harvard Style

Iso T. and Yamazaki K. (2006). EXTRACTING PERSONAL USER CONTEXT WITH A THREE-AXIS SENSOR MOUNTED ON A FREELY CARRIED CELL PHONE . In Proceedings of the International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2006) ISBN 978-972-8865-64-1, pages 224-231. DOI: 10.5220/0001568902240231


in Bibtex Style

@conference{sigmap06,
author={Toshiki Iso and Kenichi Yamazaki},
title={EXTRACTING PERSONAL USER CONTEXT WITH A THREE-AXIS SENSOR MOUNTED ON A FREELY CARRIED CELL PHONE},
booktitle={Proceedings of the International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2006)},
year={2006},
pages={224-231},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001568902240231},
isbn={978-972-8865-64-1},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2006)
TI - EXTRACTING PERSONAL USER CONTEXT WITH A THREE-AXIS SENSOR MOUNTED ON A FREELY CARRIED CELL PHONE
SN - 978-972-8865-64-1
AU - Iso T.
AU - Yamazaki K.
PY - 2006
SP - 224
EP - 231
DO - 10.5220/0001568902240231