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One paper has been accepted by EMNLP2024.

Our paper entitled "Adaptive Immune-based Sound-Shape code Substitution for Adversarial Chinese Text Attacks" has been accepted by EMNLP2024.

Adaptive Immune-based Sound-Shape code Substitution for Adversarial Chinese Text Attacks

Ao Wang, Xinghao Yang, Chen Li, Bao-di Liu, Weifeng Liu

Adversarial textual examples reveal the vulnerability of natural language processing (NLP) models. Most existing text attack methods are designed for English text, while the robust implementation of the second popular language, i.e., Chinese with 1 billion users, is greatly underestimated. Although several Chinese attack methods have been presented, they either directly transfer from English attacks or adopt simple greedy search to optimize the attack priority, usually leading to unnatural sentences. To address these issues, we propose an adaptive Immune-based Sound-Shape Code (ISSC) algorithm for adversarial Chinese text attacks. Firstly, we leverage the Sound-Shape code to generate natural substitutions, which comprehensively integrate multiple Chinese features. Secondly, we employ adaptive immune algorithm (IA) to determine the replacement order, which can reduce the duplication of population to improve the search ability. Extensive experimental results validate the superiority of our ISSC in producing high-quality Chinese adversarial texts.

 


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