Title
Learning a Taxonomy of Predefined and Discovered Activity Patterns.
Abstract
Many intelligent systems that focus on the needs of a human require information about the activities that are being performed by the human. At the core of this capability is activity recognition. Activity recognition techniques have become robust but rarely scale to handle more than a few activities. They also rarely learn from more than one smart home data set because of inherent differences between labeling techniques. In this paper we investigate a data-driven approach to creating an activity taxonomy from sensor data found in disparate smart home datasets. We investigate how the resulting taxonomy can help analyze the relationship between classes of activities. We also analyze how the taxonomy can be used to scale activity recognition to a large number of activity classes and training datasets. We describe our approach and evaluate it on 34 smart home datasets. The results of the evaluation indicate that the hierarchical modeling can reduce training time while maintaining accuracy of the learned model.
Year
DOI
Venue
2013
10.3233/AIS-130230
JAISE
Keywords
Field
DocType
activity discovery,smart home data,training datasets,data-driven approach,disparate smart home datasets,activity recognition,activity taxonomy,activity recognition technique,activity pattern,hierarchical clustering,smart home datasets,resulting taxonomy,activity class,biomedical research,bioinformatics
Hierarchical clustering,Hierarchical modeling,Data mining,Activity recognition,Intelligent decision support system,Computer science,Home automation
Journal
Volume
Issue
ISSN
5
6
1876-1364
Citations 
PageRank 
References 
3
0.39
41
Authors
3
Name
Order
Citations
PageRank
Narayanan Krishnan11808.44
Diane J. Cook25052596.13
Zachary Wemlinger3121.64