About the Authors

Pingsheng Dai

Roles Conceptualization, Data curation, Methodology, Software, Supervision, Writing – original draft, Writing – review & editing

daips@jmu.edu.cn

Affiliation School of Finance and Economics, Jimei University, Xiamen, Fujian, China

Sitong Shen

Roles Formal analysis, Methodology, Validation, Writing – review & editing

Affiliation School of Mathematics and Statistics, Nanjing University of Science and Technology, Nanjing, Jiangsu, China

Competing Interests

The authors have declared that no competing interests exist.