Sub-domain Modelling for Dialogue Management with Hierarchical Reinforcement Learning Paweł Budzianowski author Stefan Ultes author Pei-Hao Su author Nikola Mrkšić author Tsung-Hsien Wen author Iñigo Casanueva author Lina M Rojas-Barahona author Milica Gašić author 2017-08 text Proceedings of the 18th Annual SIGdial Meeting on Discourse and Dialogue Kristiina Jokinen editor Manfred Stede editor David DeVault editor Annie Louis editor Association for Computational Linguistics Saarbrücken, Germany conference publication budzianowski-etal-2017-sub 10.18653/v1/W17-5512 https://aclanthology.org/W17-5512/ 2017-08 86 92