About the Authors

Xuan Lu

Roles Conceptualization, Investigation, Visualization, Writing – original draft

Affiliation School of Information, University of Michigan, Ann Arbor, Michigan, United States of America

Wei Ai

Roles Writing – review & editing

Affiliation College of Information Studies, University of Maryland, College Park, Maryland, United States of America

Zhenpeng Chen

Roles Data curation, Resources

Affiliation Peking University, Beijing, China

Yanbin Cao

Roles Data curation, Investigation

Affiliation Peking University, Beijing, China

Qiaozhu Mei

Roles Conceptualization, Supervision, Writing – review & editing

qmei@umich.edu

Affiliation School of Information, University of Michigan, Ann Arbor, Michigan, United States of America

Competing Interests

The authors have declared that no competing interests exist.