About the Authors

Zhihao Zheng

Roles Writing – original draft

Affiliation School of Information Engineering, Hebei University of Architecture, Zhangjiakou, China

Jianguang Zhao

Contributed equally to this work with: Jianguang Zhao

Roles Resources, Supervision

☯ These authors contributed equally to this work.

Affiliation School of Information Engineering, Hebei University of Architecture, Zhangjiakou, China

Jingjing Fan

Roles Formal analysis, Methodology

fjj1960@hebiace.edu.cn

☯ These authors contributed equally to this work.

Affiliation School of Information Engineering, Hebei University of Architecture, Zhangjiakou, China

Competing Interests

The authors have declared that no competing interests exist.