Mingfang Wu Andrew Turpin Falk Scholer Yohannes Tsegay Ross Wilkinson TREC 2007 ciQA Track at RMIT and CSIRO. 2007 TREC http://trec.nist.gov/pubs/trec16/papers/rmit-csiro.qa.final.pdf conf/trec/2007 db/conf/trec/trec2007.html#WuTSTW07