1G.R.Krupka,K.Hausman.Description of the NetOwl(TM)Extractor System as Used for MUC-7[].Proceedings of the Seventh Message Understanding Conference.1998
2Erik F,Tjong Kim Sang,Fien De Meulder.Introduction to the CoNLL-2003Shared Task:Language-Independent Named Entity Recognition. Proceedings of CoNLL-2003 . 2003