Recognizing Named Entities in Tweets Xiaohua Liu author Shaodian Zhang author Furu Wei author Ming Zhou author 2011-06 text Proceedings of the 49th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies Dekang Lin editor Yuji Matsumoto editor Rada Mihalcea editor Association for Computational Linguistics Portland, Oregon, USA conference publication liu-etal-2011-recognizing https://aclanthology.org/P11-1037/ 2011-06 359 367