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Incremental Diagnosis Method for Intelligent Wearable Sensor Systems

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5 Author(s)
Wu, W.H. ; California Univ., Los Angeles ; Bui, A.A.T. ; Batalin, M.A. ; Liu, D.
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This paper presents an incremental diagnosis method (IDM) to detect a medical condition with the minimum wearable sensor usage by dynamically adjusting the sensor set based on the patient's state in his/her natural environment. The IDM, comprised of a naive Bayes classifier generated by supervised training with Gaussian clustering, is developed to classify patient motion in- context (due to a medical condition) and in real-time using a wearable sensor system. The IDM also incorporates a utility function, which is a simple form of expert knowledge and user preferences in sensor selection. Upon initial in-context detection, the utility function decides which sensor is to be activated next. High-resolution in-context detection with minimum sensor usage is possible because the necessary sensor can be activated or requested at the appropriate time. As a case study, the IDM is demonstrated in detecting different severity levels of a limp with minimum usage of high diagnostic resolution sensors.

Published in:

Information Technology in Biomedicine, IEEE Transactions on  (Volume:11 ,  Issue: 5 )

Date of Publication:

Sept. 2007

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