About the Authors

Shanwen Zhang

Contributed equally to this work with: Shanwen Zhang, Xiaowei Wu, Zhuhong You

Affiliations Department of Information Engineering, Xijing University, Xi’an, China, Department of Statistics, Virginia Tech, Blacksburg, Virginia, United States of America

Xiaowei Wu

Contributed equally to this work with: Shanwen Zhang, Xiaowei Wu, Zhuhong You

Affiliation Department of Statistics, Virginia Tech, Blacksburg, Virginia, United States of America

Zhuhong You

Contributed equally to this work with: Shanwen Zhang, Xiaowei Wu, Zhuhong You

zhuhongyou@163.com

Affiliation Department of Information Engineering, Xijing University, Xi’an, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Data curation: SZ. Formal analysis: XW. Investigation: SZ. Methodology: SZ. Resources: ZY. Software: XW. Supervision: ZY. Validation: SZ. Visualization: ZY. Writing – original draft: ZY. Writing – review & editing: XW.