Nested Event Extraction upon Pivot Element Recognition Weicheng Ren author Zixuan Li author Xiaolong Jin author Long Bai author Miao Su author Yantao Liu author Saiping Guan author Jiafeng Guo author Xueqi Cheng author 2024-05 text Proceedings of the 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation (LREC-COLING 2024) Nicoletta Calzolari editor Min-Yen Kan editor Veronique Hoste editor Alessandro Lenci editor Sakriani Sakti editor Nianwen Xue editor ELRA and ICCL Torino, Italia conference publication ren-etal-2024-nested https://aclanthology.org/2024.lrec-main.1061/ 2024-05 12127 12137