Addressing Ambiguity in Unsupervised Part-of-Speech Induction with Substitute Vectors Volkan Cirik author 2013-08 text 51st Annual Meeting of the Association for Computational Linguistics Proceedings of the Student Research Workshop Anik Dey editor Sebastian Krause editor Ivelina Nikolova editor Eva Vecchi editor Steven Bethard editor Preslav I Nakov editor Feiyu Xu editor Association for Computational Linguistics Sofia, Bulgaria conference publication cirik-2013-addressing https://aclanthology.org/P13-3017/ 2013-08 117 122