Improving Gradient-based Adversarial Training for Text Classification by Contrastive Learning and Auto-Encoder Yao Qiu author Jinchao Zhang author Jie Zhou 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 qiu-etal-2021-improving 10.18653/v1/2021.findings-acl.148 https://aclanthology.org/2021.findings-acl.148/ 2021-08 1698 1707