@inproceedings{gao-etal-2022-mask, title = "Mask-then-Fill: A Flexible and Effective Data Augmentation Framework for Event Extraction", author = "Gao, Jun and Yu, Changlong and Wang, Wei and Zhao, Huan and Xu, Ruifeng", editor = "Goldberg, Yoav and Kozareva, Zornitsa and Zhang, Yue", booktitle = "Findings of the Association for Computational Linguistics: EMNLP 2022", month = dec, year = "2022", address = "Abu Dhabi, United Arab Emirates", publisher = "Association for Computational Linguistics", url = "https://preview.aclanthology.org/fix-sig-urls/2022.findings-emnlp.332/", doi = "10.18653/v1/2022.findings-emnlp.332", pages = "4537--4544" }