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We study the most practical problem setup for evaluating adversarial robustness of a machine learning system with limited access: the hard-label black-box attack setting for generating adversarial examples, where limited model queries are…

Machine Learning · Computer Science 2020-02-17 Minhao Cheng , Simranjit Singh , Patrick Chen , Pin-Yu Chen , Sijia Liu , Cho-Jui Hsieh

Adversarial attacks, wherein slight inputs are carefully crafted to mislead intelligent models, have attracted increasing attention. However, a critical gap persists between theoretical advancements and practical application, particularly…

Cryptography and Security · Computer Science 2025-06-26 Sabrine Ennaji , Elhadj Benkhelifa , Luigi V. Mancini

Neural ranking models (NRMs) have shown remarkable success in recent years, especially with pre-trained language models. However, deep neural models are notorious for their vulnerability to adversarial examples. Adversarial attacks may…

Information Retrieval · Computer Science 2022-06-09 Chen Wu , Ruqing Zhang , Jiafeng Guo , Maarten de Rijke , Yixing Fan , Xueqi Cheng

In targeted adversarial attacks on vision models, the selection of the target label is a critical yet often overlooked determinant of attack success. This target label corresponds to the class that the attacker aims to force the model to…

Computer Vision and Pattern Recognition · Computer Science 2025-08-18 Katarzyna Filus , Jorge M. Cruz-Duarte

Although perception systems have made remarkable advancements in recent years, they still rely on explicit human instruction or pre-defined categories to identify the target objects before executing visual recognition tasks. Such systems…

Computer Vision and Pattern Recognition · Computer Science 2024-05-02 Xin Lai , Zhuotao Tian , Yukang Chen , Yanwei Li , Yuhui Yuan , Shu Liu , Jiaya Jia

Although deep neural networks have shown promising performances on various tasks, even achieving human-level performance on some, they are shown to be susceptible to incorrect predictions even with imperceptibly small perturbations to an…

Machine Learning · Computer Science 2019-09-11 Byunggill Joe , Sung Ju Hwang , Insik Shin

In previous deep-learning-based methods, semantic segmentation has been regarded as a static or dynamic per-pixel classification task, \textit{i.e.,} classify each pixel representation to a specific category. However, these methods only…

Computer Vision and Pattern Recognition · Computer Science 2023-04-03 Fangjian Lin , Zhanhao Liang , Sitong Wu , Junjun He , Kai Chen , Shengwei Tian

Recent work has shown how easily white-box adversarial attacks can be applied to state-of-the-art image classifiers. However, real-life scenarios resemble more the black-box adversarial conditions, lacking transparency and usually imposing…

Cryptography and Security · Computer Science 2021-07-14 Andrei Ilie , Marius Popescu , Alin Stefanescu

Decision-based attacks construct adversarial examples against a machine learning (ML) model by making only hard-label queries. These attacks have mainly been applied directly to standalone neural networks. However, in practice, ML models…

Cryptography and Security · Computer Science 2023-07-24 Chawin Sitawarin , Florian Tramèr , Nicholas Carlini

Semantic segmentation demands dense pixel-level annotations, which can be prohibitively expensive - especially under extremely constrained labeling budgets. In this paper, we address the problem of low-budget active learning for semantic…

Computer Vision and Pattern Recognition · Computer Science 2025-10-28 Jeongin Kim , Wonho Bae , YouLee Han , Giyeong Oh , Youngjae Yu , Danica J. Sutherland , Junhyug Noh

We revisit Deep Linear Discriminant Analysis (Deep LDA) from a likelihood-based perspective. While classical LDA is a simple Gaussian model with linear decision boundaries, attaching an LDA head to a neural encoder raises the question of…

Machine Learning · Statistics 2026-02-23 Maxat Tezekbayev , Arman Bolatov , Zhenisbek Assylbekov

A distribution inference attack aims to infer statistical properties of data used to train machine learning models. These attacks are sometimes surprisingly potent, but the factors that impact distribution inference risk are not well…

Machine Learning · Computer Science 2024-04-09 Anshuman Suri , Yifu Lu , Yanjin Chen , David Evans

Recent advancements in Large Vision-Language Models (LVLMs) have shown groundbreaking capabilities across diverse multimodal tasks. However, these models remain vulnerable to adversarial jailbreak attacks, where adversaries craft subtle…

Cryptography and Security · Computer Science 2026-01-23 Jiwei Guan , Haibo Jin , Haohan Wang

Adversarial machine learning is an emerging area showing the vulnerability of deep learning models. Exploring attack methods to challenge state of the art artificial intelligence (A.I.) models is an area of critical concern. The reliability…

Computer Vision and Pattern Recognition · Computer Science 2022-08-31 Samet Bayram , Kenneth Barner

Adversarial attacks remain a significant threat that can jeopardize the integrity of Machine Learning (ML) models. In particular, query-based black-box attacks can generate malicious noise without having access to the victim model's…

Cryptography and Security · Computer Science 2025-03-18 Jeonghwan Park , Niall McLaughlin , Ihsen Alouani

This work investigates efficient score-based black-box adversarial attacks with a high Attack Success Rate (ASR) and good generalizability. We design a novel attack method based on a Disentangled Feature space, called DifAttack, which…

Computer Vision and Pattern Recognition · Computer Science 2023-12-14 Liu Jun , Zhou Jiantao , Zeng Jiandian , Jinyu Tian

Training deep networks for semantic segmentation requires large amounts of labeled training data, which presents a major challenge in practice, as labeling segmentation masks is a highly labor-intensive process. To address this issue, we…

Computer Vision and Pattern Recognition · Computer Science 2021-08-31 Lukas Hoyer , Dengxin Dai , Qin Wang , Yuhua Chen , Luc Van Gool

Semantic segmentation of LiDAR point clouds has been widely studied in recent years, with most existing methods focusing on tackling this task using a single scan of the environment. However, leveraging the temporal stream of observations…

Computer Vision and Pattern Recognition · Computer Science 2023-11-06 Enxu Li , Sergio Casas , Raquel Urtasun

Semantic segmentation involves assigning a specific category to each pixel in an image. While Vision Transformer-based models have made significant progress, current semantic segmentation methods often struggle with precise predictions in…

Computer Vision and Pattern Recognition · Computer Science 2024-08-13 Guoan Xu , Wenfeng Huang , Tao Wu , Ligeng Chen , Wenjing Jia , Guangwei Gao , Xiatian Zhu , Stuart Perry

In practice, metric analysis on a specific train and test dataset does not guarantee reliable or fair ML models. This is partially due to the fact that obtaining a balanced, diverse, and perfectly labeled dataset is typically expensive,…

Computer Vision and Pattern Recognition · Computer Science 2023-03-24 Jinqi Luo , Zhaoning Wang , Chen Henry Wu , Dong Huang , Fernando De la Torre