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Efficient document retrieval heavily relies on the technique of semantic hashing, which learns a binary code for every document and employs Hamming distance to evaluate document distances. However, existing semantic hashing methods are…

信息检索 · 计算机科学 2022-11-01 Zexuan Qiu , Qinliang Su , Jianxing Yu , Shijing Si

Randomized smoothing has achieved state-of-the-art certified robustness against $l_2$-norm adversarial attacks. However, it is not wholly resolved on how to find the optimal base classifier for randomized smoothing. In this work, we employ…

机器学习 · 计算机科学 2021-02-24 Chizhou Liu , Yunzhen Feng , Ranran Wang , Bin Dong

We propose Adaptive Randomized Smoothing (ARS) to certify the predictions of our test-time adaptive models against adversarial examples. ARS extends the analysis of randomized smoothing using $f$-Differential Privacy to certify the adaptive…

机器学习 · 计算机科学 2025-07-11 Saiyue Lyu , Shadab Shaikh , Frederick Shpilevskiy , Evan Shelhamer , Mathias Lécuyer

Deep neural networks are known to be vulnerable to adversarial attacks. Current methods of defense from such attacks are based on either implicit or explicit regularization, e.g., adversarial training. Randomized smoothing, the averaging of…

Randomized smoothing is one of the most promising frameworks for certifying the adversarial robustness of machine learning models, including Graph Neural Networks (GNNs). Yet, existing randomized smoothing certificates for GNNs are overly…

机器学习 · 计算机科学 2024-11-12 Yan Scholten , Jan Schuchardt , Simon Geisler , Aleksandar Bojchevski , Stephan Günnemann

Deep Neural Network-based systems are now the state-of-the-art in many robotics tasks, but their application in safety-critical domains remains dangerous without formal guarantees on network robustness. Small perturbations to sensor inputs…

机器学习 · 计算机科学 2022-02-03 Michael Everett , Bjorn Lutjens , Jonathan P. How

Deep learning models have achieved great success in many fields, yet they are vulnerable to adversarial examples. This paper follows a causal perspective to look into the adversarial vulnerability and proposes Causal Intervention by…

机器学习 · 计算机科学 2022-10-18 Haiteng Zhao , Chang Ma , Xinshuai Dong , Anh Tuan Luu , Zhi-Hong Deng , Hanwang Zhang

Adversarial data examples have drawn significant attention from the machine learning and security communities. A line of work on tackling adversarial examples is certified robustness via randomized smoothing that can provide a theoretical…

机器学习 · 计算机科学 2021-08-24 Haowen Lin , Jian Lou , Li Xiong , Cyrus Shahabi

Certified defense using randomized smoothing is a popular technique to provide robustness guarantees for deep neural networks against l2 adversarial attacks. Existing works use this technique to provably secure a pretrained non-robust model…

机器学习 · 计算机科学 2022-10-18 Gaurav Kumar Nayak , Ruchit Rawal , Anirban Chakraborty

Adversarial examples pose a security risk as they can alter decisions of a machine learning classifier through slight input perturbations. Certified robustness has been proposed as a mitigation where given an input $\mathbf{x}$, a…

密码学与安全 · 计算机科学 2024-09-10 Jiankai Jin , Olga Ohrimenko , Benjamin I. P. Rubinstein

Since the seminal work of Mikolov et al., word embeddings have become the preferred word representations for many natural language processing tasks. Document similarity measures extracted from word embeddings, such as the soft cosine…

信息检索 · 计算机科学 2020-04-02 Vít Novotný , Eniafe Festus Ayetiran , Michal Štefánik , Petr Sojka

Adversarial patch attacks inject localized perturbations into images to mislead deep vision models. These attacks can be physically deployed, posing serious risks to real-world applications. In this paper, we propose CertMask, a certifiably…

计算机视觉与模式识别 · 计算机科学 2025-11-14 Xuntao Lyu , Ching-Chi Lin , Abdullah Al Arafat , Georg von der Brüggen , Jian-Jia Chen , Zhishan Guo

Randomized smoothing has shown promising certified robustness against adversaries in classification tasks. Despite such success with only zeroth-order access to base models, randomized smoothing has not been extended to a general form of…

机器学习 · 计算机科学 2024-05-16 Aref Miri Rekavandi , Olga Ohrimenko , Benjamin I. P. Rubinstein

We study certified robustness of machine learning classifiers against adversarial perturbations. In particular, we propose the first universally approximated certified robustness (UniCR) framework, which can approximate the robustness…

机器学习 · 计算机科学 2022-07-12 Hanbin Hong , Binghui Wang , Yuan Hong

Recently, techniques have been developed to provably guarantee the robustness of a classifier to adversarial perturbations of bounded L_1 and L_2 magnitudes by using randomized smoothing: the robust classification is a consensus of base…

机器学习 · 计算机科学 2019-11-22 Alexander Levine , Soheil Feizi

Motivated by the problem of detecting AI-generated text, we consider the problem of watermarking the output of language models with provable guarantees. We aim for watermarks which satisfy: (a) undetectability, a cryptographic notion…

密码学与安全 · 计算机科学 2025-05-29 Noah Golowich , Ankur Moitra

Randomized smoothing is the current state-of-the-art method for producing provably robust classifiers. While randomized smoothing typically yields robust $\ell_2$-ball certificates, recent research has generalized provable robustness to…

机器学习 · 计算机科学 2023-09-26 Samuel Pfrommer , Brendon G. Anderson , Somayeh Sojoudi

A recent technique of randomized smoothing has shown that the worst-case (adversarial) $\ell_2$-robustness can be transformed into the average-case Gaussian-robustness by "smoothing" a classifier, i.e., by considering the averaged…

机器学习 · 计算机科学 2021-01-11 Jongheon Jeong , Jinwoo Shin

Deep learning interpretation is essential to explain the reasoning behind model predictions. Understanding the robustness of interpretation methods is important especially in sensitive domains such as medical applications since…

机器学习 · 计算机科学 2019-10-21 Alexander Levine , Sahil Singla , Soheil Feizi

Despite the vulnerability of object detectors to adversarial attacks, very few defenses are known to date. While adversarial training can improve the empirical robustness of image classifiers, a direct extension to object detection is very…

计算机视觉与模式识别 · 计算机科学 2022-02-28 Ping-yeh Chiang , Michael J. Curry , Ahmed Abdelkader , Aounon Kumar , John Dickerson , Tom Goldstein