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Zhenhua Chen

3 accepted papers

2024

Query-Efficient Textual Adversarial Example Generation for Black-Box Attacks

NAACL 2024long

Deep neural networks for Natural Language Processing (NLP) have been demonstrated to be vulnerable to textual adversarial examples. Existing black-box attacks typically require thousands of queries on the target model, making them expensive in real-world applications. In this paper, we propose a new…

2023

Sparse Black-Box Multimodal Attack for Vision-Language Adversary Generation

EMNLP 2023long findings

Deep neural networks have been widely applied in real-world scenarios, such as product restrictions on e-commerce and hate speech monitoring on social media, to ensure secure governance of various platforms. However, illegal merchants often deceive the detection models by adding large-scale perturb…

Cited by 0SourceScholar
2021

Crafting Adversarial Examples for Neural Machine Translation

ACL 2021long

Effective adversary generation for neural machine translation (NMT) is a crucial prerequisite for building robust machine translation systems. In this work, we investigate veritable evaluations of NMT adversarial attacks, and propose a novel method to craft NMT adversarial examples. We first show th…