Contrasting the Interaction Structure of an Email and a Telephone Corpus: A Machine Learning Approach to Annotation of Dialogue Function Units Jun Hu author Rebecca Passonneau author Owen Rambow author 2009-09 text Proceedings of the SIGDIAL 2009 Conference Patrick Healey editor Roberto Pieraccini editor Donna Byron editor Steve Young editor Matthew Purver editor Association for Computational Linguistics London, UK conference publication hu-etal-2009-contrasting https://aclanthology.org/W09-3953/ 2009-09 357 366