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Quasi-Periodic Time Series Clustering for Human Activity Recognition

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Abstract

This paper analyses the periodic signals in the time series to recognize human activity by using a mobile accelerometer. Each point in the timeline corresponds to a segment of historical time series. This segments form a phase trajectory in phase space of human activity. The principal components of segments of the phase trajectory are treated as feature descriptions at the point in the timeline. The paper introduces a new distance function between the points in new feature space. To reval changes of types of the human activity the paper proposes an algorithm. This algorithm clusters points of the timeline by using a pairwise distances matrix. The algorithm was tested on synthetic and real data. This real data were obtained from a mobile accelerometer.

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Funding

The research was supported by the Russian Foundation for Basic Research (projects 19-07-01155, 19-07-00875) and by the Government of the Russian Federation (agreement 05.Y09.21.0018).

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Correspondence to A. V. Grabovoy or V. V. Strijov.

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(Submitted by F. G. Avkhadiev)

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Grabovoy, A.V., Strijov, V.V. Quasi-Periodic Time Series Clustering for Human Activity Recognition. Lobachevskii J Math 41, 333–339 (2020). https://doi.org/10.1134/S1995080220030075

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  • DOI: https://doi.org/10.1134/S1995080220030075

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