About the Authors

Jing Fu

Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

1200202z1009@smail.swufe.edu.cn

Affiliation School of Mathematics, Southwestern University of Finance and Economics, Chengdu, China

Competing Interests

The authors have declared that no competing interests exist.