Measuring Physical Activity of Older Adults via Smartwatch and Stigmergic Receptive Fields

Antonio L. Alfeo, Mario G. C. A. Cimino, Gigliola Vaglini

Abstract

Physical activity level (PAL) in older adults can enhance healthy aging, improve functional capacity, and prevent diseases. It is known that human annotations of PAL can be affected by subjectivity and inaccuracy. Recently developed smart devices can allow a non-invasive, analytic, and continuous gathering of physiological signals. We present an innovative computational system fed by signals of heartbeat rate, wrist motion and pedometer sensed by a smartwatch. More specifically, samples of each signal are aggregated by functional structures called trails. The trailing process is inspired by stigmergy, an insects’ coordination mechanism, and is managed by computational units called stigmergic receptive fields (SRFs). SRFs, which compute the similarity between trails, are arranged in a stigmergic perceptron to detect a collection of micro-behaviours of the raw signal, called archetypes. A SRF is adaptive to subjects: its structural parameters are tuned by a differential evolution algorithm. SRFs are used in a multilayer architecture, providing further levels of processing to realize macro analyses in the application domain. As a result, the architecture provides a daily PAL, useful to detect behavioural shift indicating initial signs of disease or deviations in performance. As a proof of concept, the approach has been experimented on three subjects.

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Paper Citation


in Harvard Style

Alfeo A., Cimino M. and Vaglini G. (2017). Measuring Physical Activity of Older Adults via Smartwatch and Stigmergic Receptive Fields . In Proceedings of the 6th International Conference on Pattern Recognition Applications and Methods - Volume 1: ICPRAM, ISBN 978-989-758-222-6, pages 724-730. DOI: 10.5220/0006253307240730


in Bibtex Style

@conference{icpram17,
author={Antonio L. Alfeo and Mario G. C. A. Cimino and Gigliola Vaglini},
title={Measuring Physical Activity of Older Adults via Smartwatch and Stigmergic Receptive Fields},
booktitle={Proceedings of the 6th International Conference on Pattern Recognition Applications and Methods - Volume 1: ICPRAM,},
year={2017},
pages={724-730},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006253307240730},
isbn={978-989-758-222-6},
}


in EndNote Style

TY - CONF
JO - Proceedings of the 6th International Conference on Pattern Recognition Applications and Methods - Volume 1: ICPRAM,
TI - Measuring Physical Activity of Older Adults via Smartwatch and Stigmergic Receptive Fields
SN - 978-989-758-222-6
AU - Alfeo A.
AU - Cimino M.
AU - Vaglini G.
PY - 2017
SP - 724
EP - 730
DO - 10.5220/0006253307240730