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  Identifying typical physical activity on smartphone with varying positions and orientations

Miao, F., He, Y., Liu, J., Li, Y., & Ayoola, I. (2015). Identifying typical physical activity on smartphone with varying positions and orientations. BioMedical Engineering, 14(1): 32, pp. 1-15. doi:10.1186/s12938-015-0026-4.

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Miao, F, Autor
He, Y1, 2, Autor           
Liu, J, Autor
Li, Y, Autor
Ayoola, I, Autor
Affiliations:
1Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              
2Research Group Translational Neuroimaging and Neural Control, Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_2528695              

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 Zusammenfassung: Background Traditional activity recognition solutions are not widely applicable due to a high cost and inconvenience to use with numerous sensors. This paper aims to automatically recognize physical activity with the help of the built-in sensors of the widespread smartphone without any limitation of firm attachment to the human body. Methods By introducing a method to judge whether the phone is in a pocket, we investigated the data collected from six positions of seven subjects, chose five signals that are insensitive to orientation for activity classification. Decision trees (J48), Naive Bayes and Sequential minimal optimization (SMO) were employed to recognize five activities: static, walking, running, walking upstairs and walking downstairs. Results The experimental results based on 8,097 activity data demonstrated that the J48 classifier produced the best performance with an average recognition accuracy of 89.6 during the three classifiers, and thus would serve as the optimal online classifier. Conclusions The utilization of the built-in sensors of the smartphone to recognize typical physical activities without any limitation of firm attachment is feasible.

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 Datum: 2015-04
 Publikationsstatus: Erschienen
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 Identifikatoren: DOI: 10.1186/s12938-015-0026-4
BibTex Citekey: MiaoHLLA2015
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Titel: BioMedical Engineering
Genre der Quelle: Zeitschrift
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Seiten: - Band / Heft: 14 (1) Artikelnummer: 32 Start- / Endseite: 1 - 15 Identifikator: -