Combining Verbal and Nonverbal Features to Overcome the “Information Gap” in Task-Oriented Dialogue Eun Young Ha author Joseph F Grafsgaard author Christopher Mitchell author Kristy Elizabeth Boyer author James C Lester author 2012-07 text Proceedings of the 13th Annual Meeting of the Special Interest Group on Discourse and Dialogue Gary Geunbae Lee editor Jonathan Ginzburg editor Claire Gardent editor Amanda Stent editor Association for Computational Linguistics Seoul, South Korea conference publication ha-etal-2012-combining https://aclanthology.org/W12-1634/ 2012-07 247 256