Xiangji Huang Yan Rui Huang Ming Zhong Miao Wen York University at TREC 2004: HARD and Genomics Tracks. 2004 TREC http://trec.nist.gov/pubs/trec13/papers/yorku.hard.geo.pdf conf/trec/2004 db/conf/trec/trec2004.html#HuangHZW04