About the Authors
- Wenli Cai
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Affiliation Department of Mathematical Sciences, Tsinghua University, Beijing, China
- Ning Su
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Affiliation Department of Mathematical Sciences, Tsinghua University, Beijing, China
- Xiangdong Liu
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* E-mail: xdliu@ustb.edu.cn
Affiliation Department of Financial Engineering, Donlinks School of Economics and Management, University of Science and Technology Beijing, Beijing, China
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: WLC NS XDL. Performed the experiments: WLC. Analyzed the data: WLC NS XDL. Contributed to the writing of the manuscript: WLC NS XDL.