Gilad Mishne David Carmel Ron Hoory Alexey Roytman Aya Soffer Automatic analysis of call-center conversations. 453-459 2005 conf/cikm/2005 CIKM http://doi.acm.org/10.1145/1099554.1099684 db/conf/cikm/cikm2005.html#MishneCHRS05