S⁴-Tuning: A Simple Cross-lingual Sub-network Tuning Method Runxin Xu author Fuli Luo author Baobao Chang author Songfang Huang author Fei Huang author 2022-05 text Proceedings of the 60th Annual Meeting of the Association for Computational Linguistics (Volume 2: Short Papers) Smaranda Muresan editor Preslav Nakov editor Aline Villavicencio editor Association for Computational Linguistics Dublin, Ireland conference publication xu-etal-2022-s4 10.18653/v1/2022.acl-short.58 https://aclanthology.org/2022.acl-short.58/ 2022-05 530 537