Comparison of Fusion Methods Based on DST and DBN in Human Activity Recognition

Date

2011-03-10

Advisors

Journal Title

Journal ISSN

ISSN

1672-6340

Volume Title

Publisher

Springer

Type

Article

Peer reviewed

Yes

Abstract

Ambient assistive living environments require sophisticated information fusion and reasoning techniques to accurately identify activities of a person under care. In this paper, we explain, compare and discuss the application of two powerful fusion methods, namely dynamic Bayesian networks (DBN) and Dempster-Shafer theory (DST), for human activity recognition. Both methods are described, the implementation of activity recognition based on these methods is explained, and model acquisition and composition are suggested. We also provide functional comparison of both methods as well as performance comparison based on the publicly available activity dataset. Our findings show that in performance and applicability, both DST and DBN are very similar; however, significant differences exist in the ways the models are obtained. DST being top-down and knowledge-based, differs significantly in qualitative terms, when compared with DBN, which is data-driven. These qualitative differences between DST and DBN should therefore dictate the selection of the appropriate model to use, given a particular activity recognition application.

Description

Keywords

Dynamic Bayesian networks, Dempster-Shafer theory, Healthcare monitoring, Ambient assisted living, Activity recognition

Citation

Tolstikov, A., Hong, X., Biswas, J. Nugent, C., Chen, L., Parente, G. (2011) Comparison of Fusion Methods Based on DST and DBN in Human Activity Recognition. Journal of Control Theory and Applications, 9(1), pp.18.

Rights

Research Institute

Cyber Technology Institute (CTI)