About the Authors

Yawu Zhao

Roles Methodology, Writing – original draft

Affiliation School of Computer Science and Technology, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China

Yihui Liu

Roles Data curation, Funding acquisition, Supervision

yxl@qlu.edu.cn

Affiliation School of Computer Science and Technology, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China

Competing Interests

The authors have declared that no competing interests exist.