Learning from a Friend: Improving Event Extraction via Self-Training with Feedback from Abstract Meaning Representation Zhiyang Xu author Jay Yoon Lee author Lifu Huang author 2023-07 text Findings of the Association for Computational Linguistics: ACL 2023 Anna Rogers editor Jordan Boyd-Graber editor Naoaki Okazaki editor Association for Computational Linguistics Toronto, Canada conference publication xu-etal-2023-learning-friend 10.18653/v1/2023.findings-acl.662 https://aclanthology.org/2023.findings-acl.662/ 2023-07 10421 10437