Exploring Task Difficulty for Few-Shot Relation Extraction Jiale Han author Bo Cheng author Wei Lu author 2021-11 text Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing Marie-Francine Moens editor Xuanjing Huang editor Lucia Specia editor Scott Wen-tau Yih editor Association for Computational Linguistics Online and Punta Cana, Dominican Republic conference publication han-etal-2021-exploring 10.18653/v1/2021.emnlp-main.204 https://aclanthology.org/2021.emnlp-main.204/ 2021-11 2605 2616