Funding for this research was provided by:
National Natural Science Foundation of China (61872042, 61972375)
Beijing Municipal Commission of Education (KZ201911417048, KM202111417009)
the Major Project of Technological Innovation 2030 - “New Generation Artificial Intelligence” (2018AAA0100800)
Funding Project for Academic Human Resources Development in Institutions of Higher Learning under the Jurisdiction of Beijing Municipality (BPHR2020AZ01, BPH2020EZ01)
innovation funding project for postgraduates of Beijing Union University (YZ2020K001)
Article History
Received: 20 March 2021
Accepted: 27 August 2021
First Online: 22 September 2021