Hongbo Xu Zhifeng Yang Bin Wang Bin Liu Jun Cheng Yue Liu Zhe Yang 0002 Xueqi Cheng Shuo Bai TREC 11 Experiments at CAS-ICT: Filtering and Web. 2002 TREC http://trec.nist.gov/pubs/trec11/papers/cas_final.hongbo.pdf db/conf/trec/trec2002.html#XuYWLCLYCB02