Multimodality and Dialogue Act Classification in the RoboHelper Project Lin Chen author Barbara Di Eugenio author 2013-08 text Proceedings of the SIGDIAL 2013 Conference Maxine Eskenazi editor Michael Strube editor Barbara Di Eugenio editor Jason D Williams editor Association for Computational Linguistics Metz, France conference publication chen-di-eugenio-2013-multimodality https://aclanthology.org/W13-4031/ 2013-08 183 192