About the Authors

Shang Xia

Affiliation Department of Computer Science, Hong Kong Baptist University, Kowloon Tong, Hong Kong S.A.R

Jiming Liu

jiming@Comp.HKBU.Edu.HK

Affiliation Department of Computer Science, Hong Kong Baptist University, Kowloon Tong, Hong Kong S.A.R

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JL SX. Performed the experiments: SX. Analyzed the data: SX. Contributed reagents/materials/analysis tools: JL SX. Wrote the paper: SX JL.