Funding for this research was provided by:
National Natural Science Foundation of China (U1701266)
Guangdong Provincial Key Laboratory of Intellectual Property and Big Data (2018B030322016)
Special Projects for Key Fields in Higher Education of Guangdong (2020ZDZX3077)
Characteristic Innovation Projects of Ordinary Universities in Guangdong Province (2020KTSCX212, 2019KTSCX245)
Projects of South China Institute of Software Engineering of Guangzhou University (ky202012)
Article History
Received: 3 September 2020
Accepted: 22 June 2021
First Online: 6 August 2021