Precise Zero-Shot Dense Retrieval without Relevance Labels Luyu Gao author Xueguang Ma author Jimmy Lin author Jamie Callan 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 gao-etal-2023-precise 10.18653/v1/2023.acl-long.99 https://aclanthology.org/2023.acl-long.99/ 2023-07 1762 1777