Mostafa Keikha Mark James Carman Robert Gwadera Shima Gerani Ilya Markov Giacomo Inches Az Azrinudin Alidin Fabio Crestani University of Lugano at TREC 2009 Blog Track. 2009 TREC http://trec.nist.gov/pubs/trec18/papers/ulugano.BLOG.pdf conf/trec/2009 db/conf/trec/trec2009.html#KeikhaCGGMIAC09