What common ground between a human and a virtual agent? The case of task-oriented dialogues for breaking bad news. Magalie Ochs author Grégoire Montcheuil author Philippe Blache author 2018-11 text Proceedings of the 22nd Workshop on the Semantics and Pragmatics of Dialogue - Poster Abstracts SEMDIAL Aix-en-Provence, France conference publication ochs-etal-2018-common http://semdial.org/anthology/Z18-Ochs_semdial_0035.pdf 2018-11