Shallow Discourse Structure for Action Item Detection Matthew Purver author Patrick Ehlen author John Niekrasz author 2006-06 text Proceedings of the Analyzing Conversations in Text and Speech Eduard Hovy editor Klaus Zechner editor Liang Zhou editor Association for Computational Linguistics New York City, New York conference publication purver-etal-2006-shallow https://aclanthology.org/W06-3405/ 2006-06 31 34