Controllable Open-ended Question Generation with A New Question Type Ontology Shuyang Cao author Lu Wang author 2021-08 text Proceedings of the 59th Annual Meeting of the Association for Computational Linguistics and the 11th International Joint Conference on Natural Language Processing (Volume 1: Long Papers) Chengqing Zong editor Fei Xia editor Wenjie Li editor Roberto Navigli editor Association for Computational Linguistics Online conference publication cao-wang-2021-controllable 10.18653/v1/2021.acl-long.502 https://aclanthology.org/2021.acl-long.502/ 2021-08 6424 6439