Controlling Chat Bot Multi-Document Navigation with the Extended Discourse Trees Dmitry Ilvovsky author Alexander Kirillovich author Boris Galitsky author 2020-09 text Proceedings of the Fourth International Conference on Computational Linguistics in Bulgaria (CLIB 2020) Department of Computational Linguistics, IBL – BAS Sofia, Bulgaria conference publication ilvovsky-etal-2020-controlling https://aclanthology.org/2020.clib-1.7/ 2020-09 63 71