Hsin-Cheng Huang
Institute of Statistical Science Academia Sinica, Taipei
hchuang@stat.sinica.edu.tw

Ruey S. Tsay
Econometrics and Statistics The University of Chicago Booth School of Business, Chicago
ruey.tsay@chicagobooth.edu

Zhiliang Ying
Department of Statistics Columbia University, New York
zying@stat.columbia.edu