@inproceedings{liu-etal-2022-hiure, title = "{H}i{URE}: Hierarchical Exemplar Contrastive Learning for Unsupervised Relation Extraction", author = "Liu, Shuliang and Hu, Xuming and Zhang, Chenwei and Li, Shu{'}ang and Wen, Lijie and Yu, Philip", editor = "Carpuat, Marine and de Marneffe, Marie-Catherine and Meza Ruiz, Ivan Vladimir", booktitle = "Proceedings of the 2022 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies", month = jul, year = "2022", address = "Seattle, United States", publisher = "Association for Computational Linguistics", url = "https://aclanthology.org/2022.naacl-main.437/", doi = "10.18653/v1/2022.naacl-main.437", pages = "5970--5980" }