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3 results on '"Wang, Weiqiong"'

2. Classification of abnormal behavior in the elderly based on Wi-Fi

Author

Lin Qiang, Cao Yongchun, Wang Weiqiong, and Yifan Li

Subjects
business.industry, Computer science, Deep learning, Model parameters, Behavior recognition, Sitting, Machine learning, computer.software_genre, Running time, Support vector machine, Squatting position, Artificial intelligence, Abnormality, business, computer
Abstract

Abnormal behavior in daily life is a great threat to the health of the elderly, so it is of great significance to detect the abnormal behavior of the elderly. Using ubiquitous commercial Wi-Fi devices to collect information, behavior detection can be performed in an indoor environment without carrying other devices. The Wi-Fi based abnormal behavior detection for the elderly proposed in this paper is aimed at the fall and wandering behaviors that the elderly are prone to. At the same time, squatting and sitting behaviors those are similar to the fall behaviors are distinguished. Several classical classification models are used to compare the effect and recognition time. The experimental comparison shows that the SVM and KNN machine learning methods after adjusting the model parameters can achieve the same recognition effect as the deep learning model LSTM, shorten the running time and improve the efficiency.

Published
2021

3. Optimal Binary Linear Codes From Maximal Arcs.

Author

Heng, Ziling, Ding, Cunsheng, and Wang, Weiqiong

Subjects
LINEAR codes, BINARY codes, HAMMING codes
Abstract

The binary Hamming codes with parameters $[{2^{m}-1, 2^{m}-1-m, 3}]$ are perfect. Their extended codes have parameters $[{2^{m}, 2^{m}-1-m, 4}]$ and are distance-optimal. The first objective of this paper is to construct a class of binary linear codes with parameters $[{2^{m+s}+2^{s}-2^{m},2^{m+s}+2^{s}-2^{m}-2m-2,4}]$ , which have better information rates than the class of extended binary Hamming codes, and are also distance-optimal. The second objective is to construct a class of distance-optimal binary codes with parameters $[{2^{m}+2, 2^{m}-2m, 6}]$. Both classes of binary linear codes have new parameters. [ABSTRACT FROM AUTHOR]

Published
2020
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