Generation and Extraction Combined Dialogue State Tracking with Hierarchical Ontology Integration Xinmeng Li author Qian Li author Wansen Wu author Quanjun Yin author 2021-11 text Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing Marie-Francine Moens editor Xuanjing Huang editor Lucia Specia editor Scott Wen-tau Yih editor Association for Computational Linguistics Online and Punta Cana, Dominican Republic conference publication li-etal-2021-generation 10.18653/v1/2021.emnlp-main.171 https://aclanthology.org/2021.emnlp-main.171/ 2021-11 2241 2249