1. Jianqing Fan is Frederick L. Moore ’18 Professor of Finance, Department of ORFE, Princeton University, Princeton, New Jersey, 08544, USA
2. Cong Ma is PhD, Department of ORFE, Princeton University, Princeton, New Jersey, 08544, USA
3. Yiqiao Zhong is postdoc, Electrical Engineering Department, Stanford University, Stanford, California, 94305, USA