ReGen: Zero-Shot Text Classification via Training Data Generation with Progressive Dense Retrieval Yue Yu author Yuchen Zhuang author Rongzhi Zhang author Yu Meng author Jiaming Shen author Chao Zhang author 2023-07 text Findings of the Association for Computational Linguistics: ACL 2023 Anna Rogers editor Jordan Boyd-Graber editor Naoaki Okazaki editor Association for Computational Linguistics Toronto, Canada conference publication yu-etal-2023-regen 10.18653/v1/2023.findings-acl.748 https://aclanthology.org/2023.findings-acl.748/ 2023-07 11782 11805