Jennifer Chu-Carroll Guillermo A. Averboch Pablo Ariel Duboué David Gondek J. William Murdock John M. Prager Paul Hoffmann Janyce Wiebe IBM in TREC 2006 Enterprise Track. 2006 TREC http://trec.nist.gov/pubs/trec15/papers/ibm-watson.ent.final.pdf conf/trec/2006 db/conf/trec/trec2006.html#Chu-CarrollADGMPHW06