AMR Parsing with Causal Hierarchical Attention and Pointers Chao Lou author Kewei Tu author 2023-12 text Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing Houda Bouamor editor Juan Pino editor Kalika Bali editor Association for Computational Linguistics Singapore conference publication lou-tu-2023-amr 10.18653/v1/2023.emnlp-main.553 https://aclanthology.org/2023.emnlp-main.553/ 2023-12 8942 8955