OpenAttack: An Open-source Textual Adversarial Attack Toolkit Guoyang Zeng author Fanchao Qi author Qianrui Zhou author Tingji Zhang author Zixian Ma author Bairu Hou author Yuan Zang author Zhiyuan Liu author Maosong Sun author 2021-08 text Proceedings of the 59th Annual Meeting of the Association for Computational Linguistics and the 11th International Joint Conference on Natural Language Processing: System Demonstrations Heng Ji editor Jong C Park editor Rui Xia editor Association for Computational Linguistics Online conference publication zeng-etal-2021-openattack 10.18653/v1/2021.acl-demo.43 https://aclanthology.org/2021.acl-demo.43/ 2021-08 363 371