Cite this article:

. . Data Analysis and Knowledge Discovery, 2020, 4(7): 1-1.

URL:

https://manu44.magtech.com.cn/Jwk_infotech_wk3/EN/     OR     https://manu44.magtech.com.cn/Jwk_infotech_wk3/EN/Y2020/V4/I7/1