Exploiting Feature Hierarchy for Transfer Learning in Named Entity Recognition Andrew Arnold author Ramesh Nallapati author William W Cohen author 2008-06 text Proceedings of ACL-08: HLT Johanna D Moore editor Simone Teufel editor James Allan editor Sadaoki Furui editor Association for Computational Linguistics Columbus, Ohio conference publication arnold-etal-2008-exploiting https://aclanthology.org/P08-1029/ 2008-06 245 253