Top-Down Structurally-Constrained Neural Response Generation with Lexicalized Probabilistic Context-Free Grammar Wenchao Du author Alan W Black author 2019-06 text Proceedings of the 2019 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, Volume 1 (Long and Short Papers) Jill Burstein editor Christy Doran editor Thamar Solorio editor Association for Computational Linguistics Minneapolis, Minnesota conference publication du-black-2019-top 10.18653/v1/N19-1377 https://aclanthology.org/N19-1377/ 2019-06 3762 3771