Hedge Classification in Biomedical Texts with a Weakly Supervised Selection of Keywords György Szarvas 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 szarvas-2008-hedge https://aclanthology.org/P08-1033/ 2008-06 281 289