About the Authors

Cai Gao

Affiliation School of Computer and Information Science, Southwest University, Chongqing, China

Xin Lan

Affiliation School of Computer and Information Science, Southwest University, Chongqing, China

Xiaoge Zhang

Affiliation School of Computer and Information Science, Southwest University, Chongqing, China

Yong Deng

ydeng@swu.edu.cn

Affiliations School of Computer and Information Science, Southwest University, Chongqing, China, School of Engineering, Vanderbilt University, Nashville, Tennessee, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: YD CG XL XZ. Analyzed the data: CG. Wrote the paper: YD. Analytical and numerical calculations: CG.