Radu Florian Hongyan Jing Nanda Kambhatla Imed Zitouni Factorizing Complex Models: A Case Study in Mention Detection. 2006 conf/acl/2006 ACL http://acl.ldc.upenn.edu/P/P06/P06-1060.pdf db/conf/acl/acl2006.html#FlorianJKZ06