Privacy-Preserving Wandering Behaviour Sensing in Dementia Patients using Modified Logistic and Dynamic Newton Leipnik Maps

Syed Aziz Shah, Jawad Ahmad, Fawad Masood, Syed Yaseen Shah, Haris Pervaiz , William Taylor, Muhammad Ali Imran , Qammer H. Abbasi

    Research output: Contribution to journalArticlepeer-review

    16 Citations (Scopus)
    2 Downloads (Pure)

    Abstract

    The health status of an elderly person can be identified by examining the additive effects of aging along disease linked to it and can lead to the ’unstable incapacity’. This health status is essentially determined by the apparent decline of independence in Activities of Daily Living (ADLs). Detecting ADLs provide possibilities of improving the home life of elderly people as it can be applied to fall detection systems.. This article looks at Radar images to detect large scale body movements. Using a publicly available Radar spectogram dataset, Deep Learning and Machine Learning techniques are used for image classification of Walking, Sitting, Standing, Picking up Object, Drinking Water and Falling Radar spectograms. The Machine Learning algorithm used were Random Forest, K Nearest Neighbours and Support Vector Machine. The Deep Learning algorithms used in this article were Long Short Term Memory, Bi-directional Long Short-Term Memory and Convolutional Neural Network. In addition to using Machine Learning and Deep Learning on the spectograms, data processing techniques such as Principal Component Analysis and Data Augmentation is applied to the spectogram images. The work done in this article is divided into 4 experiments. The first experiment applies Machine and Deep Learning to the the Raw images data, the second experiment applies Principal Component Analysis to the Raw image Data, the third experiment applies Data Augmentation to the Raw image data and the fourth and final experiment applies Principal Component Analysis and Data Augmentation to the Raw image data. The results obtained in these experiments found that the best results were obtained using the CNN algorithm with Principal Component Analysis and Data Augmentation together to obtain a result of 95.30 % accuracy. Results also showed how Principal Component Analysis was most beneficial when the training data was expanded by augmentation of the available data.
    Original languageEnglish
    Article number9187640
    Pages (from-to)3669 - 3679
    Number of pages11
    JournalIEEE Sensors Journal
    Volume21
    Issue number3
    Early online date7 Sep 2020
    DOIs
    Publication statusPublished - 1 Feb 2021

    Funder

    Engineering and Physical Sciences Research Council (EPSRC), EP/T021020/1 and EP/T021063/1.

    Keywords

    • Wandering behavior
    • human activity
    • machine learning
    • patient monitoring
    • wireless sensing

    ASJC Scopus subject areas

    • Instrumentation
    • Electrical and Electronic Engineering

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