Published on in Vol 7, No 6 (2019): June
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/13987, first published
.
1 Key Laboratory for Big Data Analysis and Simulation of Public Opinion, School of Communication and Design, Sun Yat-sen University, Guangzhou, China
2 School of Journalism and Communication, Shandong University, Jinan, China