The accurate detection of changes has the potential to form a fundamental component of systems which autonomously solicit user interaction based on transitions within an input stream, for example, electrocardiogram data or accelerometry obtained from a mobile device. This solicited interaction may be utilized for diverse scenarios such as responding to changes in a patient's vital signs within a medical domain or requesting user activity labels for generating real-world labelled datasets. Within this paper, we extend our previous work on the Multivariate Online Change detection Algorithm subsequently exploring the utility of incorporating the Benjamini Hochberg method of correcting for multiple comparisons. Furthermore, we evaluate our approach against similarly light-weight Multivariate Exponentially Weighted Moving Average and Cumulative Sum based techniques. Results are presented based on manually labelled change points in accelerometry data captured using 10 participants. Each participant performed nine distinct activities for a total period of 35 minutes. The results subsequently demonstrate the practical potential of our approach from both accuracy and computational perspectives.
Bibliographical noteFunding Information:
The authors gratefully acknowledge support from Invest Northern Ireland under research and development grant RD0513844 and the Engineering and Physical Sciences Research Council through the Multidisciplinary Assessment of Technology Centre for Healthcare (EP/F063822/1 and EP/G012393/1). Invest Northern Ireland also partially supported this project under the Competence Centre Program Grant RD0513853 - Connected Health Innovation Centre.
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- Multivariate change detection
- online change detection
- soliciting user interaction
ASJC Scopus subject areas
- Computer Networks and Communications
- Electrical and Electronic Engineering