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New LBA method improves adversarial text generation with low query budgets

Researchers have developed a new sampling-based method called LBA to generate adversarial texts more effectively under low query budgets. Unlike greedy algorithms that focus on single positions, LBA constructs an approximate distribution of high-quality adversarial examples by integrating prior and posterior knowledge. This approach allows for more efficient sampling and has demonstrated superior performance across six language models and four datasets compared to existing methods. Furthermore, LBA-generated texts are noted to be more semantically preserved and comprehensible. AI

IMPACT Improves adversarial attack generation efficiency and quality for LLMs.

RANK_REASON The cluster contains a research paper detailing a new method for adversarial text generation. [lever_c_demoted from research: ic=1 ai=1.0]

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New LBA method improves adversarial text generation with low query budgets

COVERAGE [1]

  1. arXiv cs.AI TIER_1 English(EN) · Shixin Guo, Ming Zhong, Xuhong Zhang, Dandan Zhao, Zhe Wang, Bo Zhang, Shouling Ji, Hao Peng ·

    LBA: Textual Hard-Label Adversarial Attack under Low Query Budgets

    arXiv:2607.14101v1 Announce Type: cross Abstract: Generating high-quality adversarial texts with low query budgets remains a challenging problem in the hard-label scenario. Most existing approaches rely on greedy algorithms, where one position in the text is selected for substitu…