UNIMO: Towards Unified-Modal Understanding and Generation via Cross-Modal Contrastive Learning Wei Li author Can Gao author Guocheng Niu author Xinyan Xiao author Hao Liu author Jiachen Liu author Hua Wu author Haifeng Wang author 2021-08 text Proceedings of the 59th Annual Meeting of the Association for Computational Linguistics and the 11th International Joint Conference on Natural Language Processing (Volume 1: Long Papers) Chengqing Zong editor Fei Xia editor Wenjie Li editor Roberto Navigli editor Association for Computational Linguistics Online conference publication li-etal-2021-unimo 10.18653/v1/2021.acl-long.202 https://aclanthology.org/2021.acl-long.202/ 2021-08 2592 2607