A Survey of Data Augmentation Approaches for NLP Steven Y Feng author Varun Gangal author Jason Wei author Sarath Chandar author Soroush Vosoughi author Teruko Mitamura author Eduard Hovy author 2021-08 text Findings of the Association for Computational Linguistics: ACL-IJCNLP 2021 Chengqing Zong editor Fei Xia editor Wenjie Li editor Roberto Navigli editor Association for Computational Linguistics Online conference publication feng-etal-2021-survey 10.18653/v1/2021.findings-acl.84 https://aclanthology.org/2021.findings-acl.84/ 2021-08 968 988