GAML-BERT: Improving BERT Early Exiting by Gradient Aligned Mutual Learning Wei Zhu author Xiaoling Wang author Yuan Ni author Guotong Xie 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 zhu-etal-2021-gaml 10.18653/v1/2021.emnlp-main.242 https://aclanthology.org/2021.emnlp-main.242/ 2021-11 3033 3044