Semi-supervised Speech Act Recognition in Emails and Forums Minwoo Jeong author Chin-Yew Lin author Gary Geunbae Lee author 2009-08 text Proceedings of the 2009 Conference on Empirical Methods in Natural Language Processing Philipp Koehn editor Rada Mihalcea editor Association for Computational Linguistics Singapore conference publication jeong-etal-2009-semi https://aclanthology.org/D09-1130/ 2009-08 1250 1259