Preslav Nakov, Ariel S. Schwartz, Brian Wolf, Marti A. Hearst. Supporting Annotation Layers for Natural Language Processing. In ACL 2005, 43rd Annual Meeting of the Association for Computational Linguistics, Proceedings of the Conference, 25-30 June 2005, University of Michigan, USA. pages 65-68, The Association for Computer Linguistics, 2005. [doi]
Abstract is missing.