- Zhiwei Yan
China Internet Network Information Center, Beijing, 100190, P. R. China
yan@cnnic.cn - Guanggang Geng
China Internet Network Information Center, Beijing, 100190, P. R. China
gengguanggang@cnnic.cn - Hidenori Nakazato
Waseda University, Tokyo, 169-8555, Japan
nakazato@waseda.jp - Yong-Jin Park
University of Malaysia Sabah, Sabah, 88400, Malaysia
yjpark@ums.edu.my