Fazli Can Seyit Kocberber Ozgur Baglioglu Suleyman Kardas Huseyin Cagdas Ocalan Erkan Uyar Bilkent news portal: a personalizable system with new event detection and tracking capabilities. 885 2008 SIGIR http://doi.acm.org/10.1145/1390334.1390559 conf/sigir/2008 db/conf/sigir/sigir2008.html#CanKBKOU08