Models for Multiparty Engagement in Open-World Dialog Dan Bohus author Eric Horvitz 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 bohus-horvitz-2009-models https://aclanthology.org/W09-3933/ 2009-09 225 234