Title
Improving wearable sensor data quality using context markers
Abstract
A major challenge in human activity recognition over long periods with multiple sensors is clock synchronization of independent data streams. Poor clock synchronization can lead to poor data and classifiers. In this paper, we propose a hybrid synchronization approach that combines NTP (Network Time Protocol) and context markers. Our evaluation shows that our approach significantly reduces synchronization error (20 ms) when compared to approaches that rely solely on NTP or sensor events. Our proposed approach can be applied to any wearable sensor where an independent sensor stream requires synchronization.
Year
DOI
Venue
2019
10.1145/3341162.3349334
Proceedings of the 2019 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2019 ACM International Symposium on Wearable Computers
Keywords
Field
DocType
clock drifts, clock synchronization, wearable sensors
Data quality,Computer science,Wearable computer,Clock synchronization,Computer hardware,Embedded system
Conference
ISBN
Citations 
PageRank 
978-4503-6869-8
1
0.35
References 
Authors
2
5
Name
Order
Citations
PageRank
Chaofan Wang154.66
Zhanna Sarsenbayeva25010.72
Chu Luo38412.18
Goncalves, J.440442.24
Vassilis Kostakos51718138.50