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Training Classifiers with Shadow Features for Sensor-Based Human Activity Recognition
Fong, Simon; Song, Wei; Cho, Kyungeun; Wong, Raymond; Wong, Kelvin K. L.
2017-03
Source PublicationSENSORS
ISSN1424-8220
Volume17Issue:3
AbstractIn this paper, a novel training/testing process for building/using a classification model based on human activity recognition (HAR) is proposed. Traditionally, HAR has been accomplished by a classifier that learns the activities of a person by training with skeletal data obtained from a motion sensor, such as Microsoft Kinect. These skeletal data are the spatial coordinates (x, y, z) of different parts of the human body. The numeric information forms time series, temporal records of movement sequences that can be used for training a classifier. In addition to the spatial features that describe current positions in the skeletal data, new features called shadow features' are used to improve the supervised learning efficacy of the classifier. Shadow features are inferred from the dynamics of body movements, and thereby modelling the underlying momentum of the performed activities. They provide extra dimensions of information for characterising activities in the classification process, and thereby significantly improve the classification accuracy. Two cases of HAR are tested using a classification model trained with shadow features: one is by using wearable sensor and the other is by a Kinect-based remote sensor. Our experiments can demonstrate the advantages of the new method, which will have an impact on human activity detection research.
Keywordfeature selection supervised learning classification human activity recognition
DOI10.3390/s17030476
URLView the original
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Electrochemistry ; Instruments & Instrumentation
WOS SubjectChemistry, Analytical ; Electrochemistry ; Instruments & Instrumentation
WOS IDWOS:000398818700049
PublisherMDPI AG
The Source to ArticleWOS
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被引频次[WOS]:7   [WOS记录]     [WOS相关记录]
Document TypeJournal article
专题University of Macau
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GB/T 7714
Fong, Simon,Song, Wei,Cho, Kyungeun,et al. Training Classifiers with Shadow Features for Sensor-Based Human Activity Recognition[J]. SENSORS,2017,17(3).
APA Fong, Simon,Song, Wei,Cho, Kyungeun,Wong, Raymond,&Wong, Kelvin K. L..(2017).Training Classifiers with Shadow Features for Sensor-Based Human Activity Recognition.SENSORS,17(3).
MLA Fong, Simon,et al."Training Classifiers with Shadow Features for Sensor-Based Human Activity Recognition".SENSORS 17.3(2017).
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