Title
Discovery and recognition of unknown activities.
Abstract
Human activity recognition plays a significant role in enabling pervasive applications as it abstracts low-level noisy sensor data into high-level human activities, which applications can respond to. In this paper, we identify a new research question in activity recognition -- discovering and learning unknown activities that have not been pre-defined or observed. As pervasive systems intend to be deployed in a real-world environment for a long period of time, it is infeasible, to expect that users will only perform a set of pre-defined activities. Users might perform the same activities in a different manner, or perform a new type of activity. Failing to detect or update the activity model to incorporate new patterns or activities will outdate the model and result in unsatisfactory service delivery. To address this question, we explore the solution space and propose an estimation-based approach to not only discover and learn new activities over time, but also benefit from no need to store any historic sensor data.
Year
DOI
Venue
2016
10.1145/2968219.2968288
UbiComp Adjunct
Keywords
Field
DocType
Activity recognition, Online learning, Incremental learning, Hierarchical Clustering, Pervasive computing, Smart home
Data science,Hierarchical clustering,Pervasive systems,Activity recognition,Research question,Computer science,Incremental learning,Home automation,Human–computer interaction,Ubiquitous computing,Service delivery framework
Conference
Citations 
PageRank 
References 
1
0.39
13
Authors
3
Name
Order
Citations
PageRank
Juan Ye11259.82
Lei Fang2284.79
Simon A. Dobson319824.85