About the Authors
- Pingsheng Dai
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Roles Conceptualization, Data curation, Methodology, Software, Supervision, Writing – original draft, Writing – review & editing
* E-mail: daips@jmu.edu.cn
Affiliation School of Finance and Economics, Jimei University, Xiamen, Fujian, China
- Sitong Shen
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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.