School of Statistics, University of Minnesota, Minneapolis, Minnesota, United States of America; Carlson School of Management, University of Minnesota, Minneapolis, Minnesota, United States of America
Xuan Bi
School of Statistics, University of Minnesota, Minneapolis, Minnesota, United States of America; Carlson School of Management, University of Minnesota, Minneapolis, Minnesota, United States of America
Rex Shen
Department of Statistics, School of Humanities and Sciences, Stanford University, Stanford, California, United States of America