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Adversarial examples, which are inputs deliberately perturbed with imperceptible changes to induce model errors, have raised serious concerns for the reliability and security of deep neural networks (DNNs). While adversarial attacks have…

Computation and Language · Computer Science 2024-11-13 Xiaoyin Yi , Jiacheng Huang

We study the cross-entropy method (CEM) for the non-convex optimization of a continuous and parameterized objective function and introduce a differentiable variant that enables us to differentiate the output of CEM with respect to the…

Machine Learning · Computer Science 2020-08-18 Brandon Amos , Denis Yarats

In the scenario of black-box adversarial attack, the target model's parameters are unknown, and the attacker aims to find a successful adversarial perturbation based on query feedback under a query budget. Due to the limited feedback…

Machine Learning · Computer Science 2023-01-03 Fei Yin , Yong Zhang , Baoyuan Wu , Yan Feng , Jingyi Zhang , Yanbo Fan , Yujiu Yang

Deep learning systems, critical in domains like autonomous vehicles, are vulnerable to adversarial examples (crafted inputs designed to mislead classifiers). This study investigates black-box adversarial attacks in computer vision. This is…

Cryptography and Security · Computer Science 2025-06-09 Francesco Panebianco , Mario D'Onghia , Stefano Zanero aand Michele Carminati

Recently, reinforcement learning (RL) has become a common choice in enhancing the reasoning capabilities of vision-language models (VLMs). Considering existing RL-based finetuning methods, entropy intervention turns out to be an effective…

Artificial Intelligence · Computer Science 2025-12-13 Yang Yu , Zhuangzhuang Chen , Siqi Wang , Lanqing Li , Xiaomeng Li

Multi-targeted adversarial attacks aim to mislead classifiers toward specific target classes using a single perturbation generator with a conditional input specifying the desired target class. Existing methods face two key limitations: (1)…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Taïga Gonçalves , Tomo Miyazaki , Shinichiro Omachi

Adversarial examples (AE) with good transferability enable practical black-box attacks on diverse target models, where insider knowledge about the target models is not required. Previous methods often generate AE with no or very limited…

Machine Learning · Computer Science 2023-07-11 Tao Wu , Tie Luo , Donald C. Wunsch

Adversarial attacks have threatened the application of deep neural networks in security-sensitive scenarios. Most existing black-box attacks fool the target model by interacting with it many times and producing global perturbations.…

Computer Vision and Pattern Recognition · Computer Science 2021-01-05 Tao Xiang , Hangcheng Liu , Shangwei Guo , Tianwei Zhang , Xiaofeng Liao

Transfer attacks optimize on a surrogate and deploy to a black-box target. While iterative optimization attacks in this paradigm are limited by their per-input cost limits efficiency and scalability due to multistep gradient updates for…

Computer Vision and Pattern Recognition · Computer Science 2026-03-16 Jongoh Jeong , Hunmin Yang , Jaeseok Jeong , Kuk-Jin Yoon

Despite the strong performance of deep neural networks in modern Web and language applications, they remain vulnerable to adversarial attacks, especially transferable attacks that generate adversarial examples using surrogate models without…

Computation and Language · Computer Science 2026-05-26 Han Liu , Zhi Xu , Xiaotong Zhang , Feng Zhang , Xiaoming Xu , Wei Wang , Fenglong Ma , Hong Yu

The language models, especially the basic text classification models, have been shown to be susceptible to textual adversarial attacks such as synonym substitution and word insertion attacks. To defend against such attacks, a growing body…

Cryptography and Security · Computer Science 2024-06-12 Xinyu Zhang , Hanbin Hong , Yuan Hong , Peng Huang , Binghui Wang , Zhongjie Ba , Kui Ren

Adversarial attacks on machine learning algorithms have been a key deterrent to the adoption of AI in many real-world use cases. They significantly undermine the ability of high-performance neural networks by forcing misclassifications.…

Machine Learning · Computer Science 2024-04-04 Nandish Chattopadhyay , Atreya Goswami , Anupam Chattopadhyay

We present EASE, a novel method for learning sentence embeddings via contrastive learning between sentences and their related entities. The advantage of using entity supervision is twofold: (1) entities have been shown to be a strong…

Computation and Language · Computer Science 2022-05-10 Sosuke Nishikawa , Ryokan Ri , Ikuya Yamada , Yoshimasa Tsuruoka , Isao Echizen

The robustness of deep learning models against adversarial attacks remains a pivotal concern. This study presents, for the first time, an exhaustive review of the transferability aspect of adversarial attacks. It systematically categorizes…

Computer Vision and Pattern Recognition · Computer Science 2024-02-19 Zhibo Jin , Jiayu Zhang , Zhiyu Zhu , Huaming Chen

Explainable AI is a strong strategy implemented to understand complex black-box model predictions in a human interpretable language. It provides the evidence required to execute the use of trustworthy and reliable AI systems. On the other…

Computation and Language · Computer Science 2025-03-12 Esther Chiramal , Kelvin Soh Boon Kai

Recent techniques in Question Answering (QA) have gained remarkable performance improvement with some QA models even surpassed human performance. However, the ability of these models in truly understanding the language still remains dubious…

Computation and Language · Computer Science 2022-03-01 Weiwen Xu , Bowei Zou , Wai Lam , Ai Ti Aw

An adversarial attack paradigm explores various scenarios for the vulnerability of deep learning models: minor changes of the input can force a model failure. Most of the state of the art frameworks focus on adversarial attacks for images…

Machine Learning · Computer Science 2020-06-22 I. Fursov , A. Zaytsev , N. Kluchnikov , A. Kravchenko , E. Burnaev

Machine unlearning aims to remove specific concepts from pretrained text-to-image diffusion models, yet several white- and black-box attacks have been introduced to make the model generate such unlearned concepts. These attacks,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-27 Arian Komaei Koma , Seyed Amir Kasaei , AmirMahdi Sadeghzadeh , Mohammad Hossein Rohban

In this paper, we introduce an enhanced textual adversarial attack method, known as Saliency Attention and Semantic Similarity driven adversarial Perturbation (SASSP). The proposed scheme is designed to improve the effectiveness of…

Cryptography and Security · Computer Science 2025-05-22 Hetvi Waghela , Jaydip Sen , Sneha Rakshit

Adversarial attacks are a type of attack on machine learning models where an attacker deliberately modifies the inputs to cause the model to make incorrect predictions. Adversarial attacks can have serious consequences, particularly in…

Machine Learning · Computer Science 2025-09-15 Prathyusha Devabhakthini , Sasmita Parida , Raj Mani Shukla , Suvendu Chandan Nayak , Tapadhir Das