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Register a new userGradient-based Adversarial Attacks against Text Transformers
هجمات المخادتين المستندة إلى التدرج ضد محولات النص
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نقترح أول هجوم مقاوم للتدرج على المستوى العام على نماذج المحولات.بدلا من البحث عن مثال خصم واحد، نبحث عن توزيع الأمثلة الخصومة المعلمة بواسطة مصفوفة مستمرة قيمة، وبالتالي تمكين التحسين المستندة إلى التدرج.إننا نوضح تجريبيا أن هجومنا الأبيض الخاص بنا يصل إلى أداء الهجوم الحديثة في مجموعة متنوعة من المهام اللغوية الطبيعية، مما يتفوق على العمل السابق من حيث معدل النجاح العديي مع مطابقة غير محسنة حسب التقييم الآلي والبشري.علاوة على ذلك، نظير على أن هجوم قوي عبر الصندوق الأسود، تم تمكينه بواسطة أخذ العينات من التوزيع العديزي أو يطابق أو يتجاوز الطرق الحالية، في حين يتطلب فقط مخرجات التسمية الصعبة.
We propose the first general-purpose gradient-based adversarial attack against transformer models. Instead of searching for a single adversarial example, we search for a distribution of adversarial examples parameterized by a continuous-valued matrix, hence enabling gradient-based optimization. We empirically demonstrate that our white-box attack attains state-of-the-art attack performance on a variety of natural language tasks, outperforming prior work in terms of adversarial success rate with matching imperceptibility as per automated and human evaluation. Furthermore, we show that a powerful black-box transfer attack, enabled by sampling from the adversarial distribution, matches or exceeds existing methods, while only requiring hard-label outputs.
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