Douglas W. Oard Tamer Elsayed Jianqiang Wang Yejun Wu Pengyi Zhang Eileen G. Abels Jimmy J. Lin Dagobert Soergel TREC 2006 at Maryland: Blog, Enterprise, Legal and QA Tracks. 2006 TREC http://trec.nist.gov/pubs/trec15/papers/umd.blog.ent.legal.qa.final.pdf conf/trec/2006 db/conf/trec/trec2006.html#OardEWWZALS06