About the Authors

Yunming Xiao

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

Affiliation School of Sciences, Beijing University of Posts and Telecommunications, Beijing, China

Bin Wu

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

bin.wu@bupt.edu.cn

Affiliation School of Sciences, Beijing University of Posts and Telecommunications, Beijing, China

Competing Interests

The authors have declared that no competing interests exist.