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An application of the Dempster-Shafer theory of evidence to the classification of knee function and detection of improvement due to total knee replacement surgery

Jones, Lianne, Beynon, Malcolm James, Holt, Catherine Avril and Roy, Stuart 2006. An application of the Dempster-Shafer theory of evidence to the classification of knee function and detection of improvement due to total knee replacement surgery. Journal of biomechanics 39 (13) , pp. 2512-2520. 10.1016/j.jbiomech.2005.07.024

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Abstract

This paper utilises a novel method for the classification of subjects with osteoarthritic and normal knee function. The classification method comprises a number of different components. Firstly, the method exploits the Dempster–Shafer theory of evidence allowing for a degree of ignorance in the subject's classification, i.e., a level of uncertainty as to whether a gait variable indicates osteoarthritis or not. Secondly, the inclusion of simplex plots allows both the classification of a subject, and the contribution of each associated gait variable to that classification, to be represented visually. As a result, the method is further able to highlight periodic changes in a subject's knee function due to total knee replacement surgery and subsequent recovery. The visual representation enables a simple clinical interpretation of the results from the quantitative analysis.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Business (Including Economics)
Engineering
Uncontrolled Keywords: Classification; Dempster–Shafer theory; Knee function; Total knee replacement; Gait analysis
Publisher: Elsevier
ISSN: 0021-9290
Last Modified: 18 Oct 2017 10:10
URI: http://orca.cf.ac.uk/id/eprint/2113

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