Date of Award:
5-2017
Document Type:
Thesis
Degree Name:
Master of Science (MS)
Department:
Computer Science
Committee Chair(s)
Xiaojun Qi
Committee
Xiaojun Qi
Committee
Kyumin Lee
Committee
Haitao Wang
Abstract
In this study, we designed a system that recognizes a person’s physical activity by analyzing data read from a device that he or she wears. In order to reduce the system’s demands on the device’s computational capacity and memory space, we designed a series of strategies such as making accurate analysis based on only a small amount of data in the memory, extracting only the most useful features from the data, cutting unnecessary branches of the classification system, etc. We also implemented a strategy to correct certain types of misclassifications, in order to improve the performance of the system.
We categorized a person’s daily activities into three activity states, including stationary, walking, and running. Based on data collected from five subjects, we trained a classification system that provides an activity state feedback every second and yields a classification accuracy of 94.82%. Our experiments also demonstrated that the strategies applied to reduce system size and improve system performance worked well.
Checksum
aa4c394ccfd6d5168e41239fa66797fe
Recommended Citation
Li, Chong, "Wearable Computing: Accelerometer-Based Human Activity Classification Using Decision Tree" (2017). All Graduate Theses and Dissertations, Spring 1920 to Summer 2023. 5799.
https://digitalcommons.usu.edu/etd/5799
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