About the Authors

Jie Xiong

xiongj08@mails.tsinghua.edu.cn

Affiliation Department of Automation, Tsinghua University, Beijing, China

Tong Zhou

Affiliation Department of Automation and Tsinghua National Laboratory for Information Science and Technology(TNList), Tsinghua University, Beijing, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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