About the Authors

Jing Wang

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

Li Li

lily@swu.edu.cn

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

Feng Tan

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

Ying Zhu

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

Weisi Feng

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

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JW LL. Performed the experiments: JW. Analyzed the data: FT YZ. Contributed reagents/materials/analysis tools: JW WF. Wrote the paper: JW LL.