TextHacker: Learning based Hybrid Local Search Algorithm for Text Hard-label Adversarial Attack Zhen Yu author Xiaosen Wang author Wanxiang Che author Kun He author 2022-12 text Findings of the Association for Computational Linguistics: EMNLP 2022 Yoav Goldberg editor Zornitsa Kozareva editor Yue Zhang editor Association for Computational Linguistics Abu Dhabi, United Arab Emirates conference publication yu-etal-2022-texthacker 10.18653/v1/2022.findings-emnlp.44 https://aclanthology.org/2022.findings-emnlp.44/ 2022-12 622 637