Published on in Vol 9, No 4 (2021): April
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/23587, first published
.
1 Key Laboratory of Network Oriented Intelligent Computation, Harbin Institute of Technology, Shenzhen, China
2 Baidu International Technology (Shenzhen) Co, Ltd, Shenzhen, China
3 Peng Cheng Laboratory, Shenzhen, China