About the Authors

Xiang Zhang

Affiliation Department of Electrical Engineering and Computer Science, Case Western Reserve University, Ohio, United States of America

Shunping Huang

Affiliation Department of Computer Science, University of North Carolina at Chapel Hill, North Carolina, United States of America

Zhaojun Zhang

Affiliation Department of Computer Science, University of North Carolina at Chapel Hill, North Carolina, United States of America

Wei Wang

weiwang@cs.ucla.edu

Affiliation Department of Computer Science, University of California at Los Angeles, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.