Bootstrapped Unsupervised Sentence Representation Learning Yan Zhang author Ruidan He author Zuozhu Liu author Lidong Bing author Haizhou Li 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 zhang-etal-2021-bootstrapped 10.18653/v1/2021.acl-long.402 https://aclanthology.org/2021.acl-long.402/ 2021-08 5168 5180