Published on in Vol 23, No 6 (2021): June
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/29730, first published
.
1 Department of Software, Sejong University, 209 Neungdong-ro, Seoul, Republic of Korea
2 Department of Data Science, Sejong University, Seoul, Republic of Korea
3 Department of Computer Science and Engineering, Kyung Hee University, Yongin, Republic of Korea