RetroMAE-2: Duplex Masked Auto-Encoder For Pre-Training Retrieval-Oriented Language Models Zheng Liu author Shitao Xiao author Yingxia Shao author Zhao Cao author 2023-07 text Proceedings of the 61st Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers) Anna Rogers editor Jordan Boyd-Graber editor Naoaki Okazaki editor Association for Computational Linguistics Toronto, Canada conference publication liu-etal-2023-retromae 10.18653/v1/2023.acl-long.148 https://aclanthology.org/2023.acl-long.148/ 2023-07 2635 2648