About the Authors

Nan Gao

Affiliation Department of Computer Science and Engineering, University of South Carolina, Columbia, South Carolina, United States of America

Ning Yang

Affiliation School of Automation, Northwestern Polytechnical University, Shaanxi, Xi'an, China

Jijun Tang

jtang@cse.sc.edu

Affiliations Tianjin Key Laboratory of Cognitive Computing and Application, Tianjin University, Tianjin, China, Department of Computer Science and Engineering, University of South Carolina, Columbia, South Carolina, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: NG NY JT. Performed the experiments: NG NY. Analyzed the data: NG NY JT. Contributed reagents/materials/analysis tools: NG. Wrote the paper: NG NY JT.