ECO v1: Towards Event-Centric Opinion Mining Ruoxi Xu author Hongyu Lin author Meng Liao author Xianpei Han author Jin Xu author Wei Tan author Yingfei Sun author Le Sun author 2022-05 text Findings of the Association for Computational Linguistics: ACL 2022 Smaranda Muresan editor Preslav Nakov editor Aline Villavicencio editor Association for Computational Linguistics Dublin, Ireland conference publication xu-etal-2022-eco 10.18653/v1/2022.findings-acl.216 https://aclanthology.org/2022.findings-acl.216/ 2022-05 2743 2753