Learning to Ask Questions in Open-domain Conversational Systems with Typed Decoders Yansen Wang author Chenyi Liu author Minlie Huang author Liqiang Nie author 2018-07 text Proceedings of the 56th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers) Iryna Gurevych editor Yusuke Miyao editor Association for Computational Linguistics Melbourne, Australia conference publication wang-etal-2018-learning-ask 10.18653/v1/P18-1204 https://aclanthology.org/P18-1204/ 2018-07 2193 2203