Engagement driven topic selection for an information-giving agent Nadine Glas author Ken Prepin author Catherine Pelachaud author 2015-08 text Proceedings of the 19th Workshop on the Semantics and Pragmatics of Dialogue - Full Papers SEMDIAL Gothenburg, Sweden conference publication glas-etal-2015-engagement http://semdial.org/anthology/Z15-Glas_semdial_0009.pdf 2015-08