BJUT at TREC 2013 Microblog Track. - Zhen Yang 004; Guangyuan Zhang; Shuyong Si; Yingxu Lai; Kefeng Fan (TREC, 2013)

BJUT at TREC 2014 Microblog Track. - Guangyuan Zhang; Zhen Yang 004; Shuyong Si (TREC, 2014)