@inproceedings{zhang-etal-2024-hyperspherical, title = "Hyperspherical Multi-Prototype with Optimal Transport for Event Argument Extraction", author = "Zhang, Guangjun and Zhang, Hu and Wang, YuJie and Li, Ru and Tan, Hongye and Liang, Jiye", editor = "Ku, Lun-Wei and Martins, Andre and Srikumar, Vivek", booktitle = "Proceedings of the 62nd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)", month = aug, year = "2024", address = "Bangkok, Thailand", publisher = "Association for Computational Linguistics", url = "https://aclanthology.org/2024.acl-long.502/", doi = "10.18653/v1/2024.acl-long.502", pages = "9271--9284" }