About the Authors

Yingjun Ma

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

yjma@xmut.edu.cn

Affiliation School of Mathematics and Statistics, Xiamen University of Technology, Xiamen, China

Yuanyuan Ma

Roles Funding acquisition, Writing – review & editing

Affiliation School of Computer Engineering, Hubei University of Arts and Science, Xiangyang, China

Competing Interests

The authors have declared that no competing interests exist.