Jianfeng Gao Guihong Cao Hongzhao He Min Zhang Jian-Yun Nie Steve Walker Stephen E. Robertson TREC-10 Web Track Experiments at MSRA. 2001 TREC http://trec.nist.gov/pubs/trec10/papers/msra.trec10.pdf db/conf/trec/trec2001.html#GaoCHZNWR01