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Learning deep and shallow features for human activity recognition.

Sani, Sadiq; Massie, Stewart; Wiratunga, Nirmalie; Cooper, Kay


Sadiq Sani


Gang Li

Yong Ge

Zili Zhang

Zhi Jin

Michael Blumenstein


selfBACK is an mHealth decision support system used by patients for the self-management of Lower Back Pain. It uses Human Activity Recognition from wearable sensors to monitor user activity in order to measure their adherence to prescribed physical activity plans. Different feature representation approaches have been proposed for Human Activity Recognition, including shallow, such as with hand-crafted time domain features and frequency transformation features; or, more recently, deep with Convolutional Neural Net approaches. The different approaches have produced mixed results in previous work and a clear winner has not been identified. This is especially the case for wrist mounted accelerometer sensors which are more susceptible to random noise compared to data from sensors mounted at other body locations e.g. thigh, waist or lower back. In this paper, we compare 7 different feature representation approaches on accelerometer data collected from both the wrist and the thigh. In particular, we evaluate a Convolutional Neural Net hybrid approach that has been shown to be effective on image retrieval but not previously applied to Human Activity Recognition. Results show the hybrid approach is effective, producing the best results compared to both hand-crafted and frequency domain feature representations by a margin of over 1.4% on the wrist.


SANI, S., MASSIE, S., WIRATUNGA, N. and COOPER, K. 2017. Learning deep and shallow features for human activity recognition. In Li, G., Ge, Y, Zhang, Z., Jin, Z. and Blumenstein, M. (eds.) Knowledge science, engineering and management: proceedings of the 10th International knowledge science, engineering and management conference (KSEM 2017), 19-20 August 2017, Melbourne, Australia. Lecture notes in computer science, 10412. Cham: Springer [online], pages 469-482. Available from:

Conference Name 10th International knowledge science, engineering and management conference (KSEM 2017)
Conference Location Melbourne, Australia
Start Date Aug 19, 2017
End Date Aug 20, 2017
Acceptance Date May 31, 2017
Online Publication Date Jul 19, 2017
Publication Date Jul 19, 2017
Deposit Date Aug 31, 2017
Publicly Available Date Jul 20, 2018
Print ISSN 0302-9743
Publisher Springer
Pages 469-482
Series Title Lecture notes in computer science
Series Number 10412
Series ISSN 0302-9743
ISBN 9783319635576
Keywords Human activity recognition; Feature representation; Deep learning
Public URL


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