Recognizing Rare Social Phenomena in Conversation: Empowerment Detection in Support Group Chatrooms Elijah Mayfield author David Adamson author Carolyn Penstein Rosé author 2013-08 text Proceedings of the 51st Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers) Hinrich Schuetze editor Pascale Fung editor Massimo Poesio editor Association for Computational Linguistics Sofia, Bulgaria conference publication mayfield-etal-2013-recognizing https://aclanthology.org/P13-1011/ 2013-08 104 113