About the Authors

Fei Han

hanfei@mail.ujs.edu.cn

Affiliation School of Computer Science and Communication Engineering, Jiangsu University, Zhenjiang, China

Wei Sun

Affiliation School of Computer Science and Communication Engineering, Jiangsu University, Zhenjiang, China

Qing-Hua Ling

Affiliations School of Computer Science and Communication Engineering, Jiangsu University, Zhenjiang, China, School of Computer Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: FH WS. Performed the experiments: FH WS. Analyzed the data: QHL. Wrote the paper: FH.