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We propose to use precise estimators of mutual information (MI) to find least dependent components in a linearly mixed signal. On the one hand this seems to lead to better blind source separation than with any other presently available…

计算物理 · 物理学 2007-07-16 Harald Stögbauer , Alexander Kraskov , Sergey A. Astakhov , Peter Grassberger

We study a setting where a data holder wishes to share data with a receiver, without revealing certain summary statistics of the data distribution (e.g., mean, standard deviation). It achieves this by passing the data through a…

密码学与安全 · 计算机科学 2023-10-31 Zinan Lin , Shuaiqi Wang , Vyas Sekar , Giulia Fanti

Several membership inference (MI) attacks have been proposed to audit a target DNN. Given a set of subjects, MI attacks tell which subjects the target DNN has seen during training. This work focuses on the post-training MI attacks…

机器学习 · 计算机科学 2023-07-12 Hassan Ali , Adnan Qayyum , Ala Al-Fuqaha , Junaid Qadir

The rise of generative image models leads to privacy concerns when it comes to the huge datasets used to train such models. This paper investigates the possibility of inferring if a set of face images was used for fine-tuning a Latent…

计算机视觉与模式识别 · 计算机科学 2025-03-05 Lauritz Christian Holme , Anton Mosquera Storgaard , Siavash Arjomand Bigdeli

The increasing use of diffusion models for image generation, especially in sensitive areas like medical imaging, has raised significant privacy concerns. Membership Inference Attack (MIA) has emerged as a potential approach to determine if…

计算机视觉与模式识别 · 计算机科学 2025-06-19 Xinkai Zhao , Yuta Tokuoka , Junichiro Iwasawa , Keita Oda

Deep neural networks are known to be vulnerable to adversarial attacks (AA). For an image recognition task, this means that a small perturbation of the original can result in the image being misclassified. Design of such attacks as well as…

机器学习 · 计算机科学 2023-06-19 Xingjian Bai , Guangyi He , Yifan Jiang , Jan Obloj

We show that several machine learning estimators, including square-root LASSO (Least Absolute Shrinkage and Selection) and regularized logistic regression can be represented as solutions to distributionally robust optimization (DRO)…

统计理论 · 数学 2020-10-22 Jose Blanchet , Yang Kang , Karthyek Murthy

This work aims to address an open problem in data valuation literature concerning the efficient computation of Data Shapley for weighted $K$ nearest neighbor algorithm (WKNN-Shapley). By considering the accuracy of hard-label KNN with…

数据结构与算法 · 计算机科学 2024-01-23 Jiachen T. Wang , Prateek Mittal , Ruoxi Jia

This paper introduces the Beta distribution as a novel technique to weight direct and indirect trust and assessing the risk in wireless sensor networks. This paper also reviews the trust factors, which play a major role in building trust in…

密码学与安全 · 计算机科学 2014-10-14 Mohammad Momani , Maen Takruri , Rami Al-Hmouz

Membership inference attacks (MIA) aim to infer whether a particular data point is part of the training dataset of a model. In this paper, we propose a new task in the context of LLM privacy: entity-level discovery of membership risk…

机器学习 · 计算机科学 2025-11-04 Ali Satvaty , Suzan Verberne , Fatih Turkmen

Machine learning models leak information about the datasets on which they are trained. An adversary can build an algorithm to trace the individual members of a model's training dataset. As a fundamental inference attack, he aims to…

机器学习 · 统计学 2018-07-17 Milad Nasr , Reza Shokri , Amir Houmansadr

The advances in machine learning (ML) have greatly improved AI-based diagnosis aid systems in medical imaging. However, being based on collecting medical data specific to individuals induces several security issues, especially in terms of…

密码学与安全 · 计算机科学 2022-06-09 Mounia Hamidouche , Reda Bellafqira , Gwenolé Quellec , Gouenou Coatrieux

The $K$-nearest neighbors is a basic problem in machine learning with numerous applications. In this problem, given a (training) set of $n$ data points with labels and a query point $p$, we want to assign a label to $p$ based on the labels…

分布式、并行与集群计算 · 计算机科学 2020-08-25 Reza Fathi , Anisur Rahaman Molla , Gopal Pandurangan

A number of recent works have demonstrated that API access to machine learning models leaks information about the dataset records used to train the models. Further, the work of \cite{somesh-overfit} shows that such membership inference…

密码学与安全 · 计算机科学 2019-10-15 Benjamin Zi Hao Zhao , Hassan Jameel Asghar , Raghav Bhaskar , Mohamed Ali Kaafar

As large-scale models such as Large Language Models (LLMs) and Large Multimodal Models (LMMs) see increasing deployment, their privacy risks remain underexplored. Membership Inference Attacks (MIAs), which reveal whether a data point was…

机器学习 · 计算机科学 2025-09-03 Hengyu Wu , Yang Cao

Optimization algorithms that seek flatter minima, such as Sharpness-Aware Minimization (SAM), are credited with improved generalization and robustness to noise. We ask whether such gains impact membership privacy. Surprisingly, we find that…

机器学习 · 计算机科学 2026-01-29 Young In Kim , Andrea Agiollo , Pratiksha Agrawal , Johannes O. Royset , Rajiv Khanna

Publishing social network data for research purposes has raised serious concerns for individual privacy. There exist many privacy-preserving works that can deal with different attack models. In this paper, we introduce a novel privacy…

数据库 · 计算机科学 2016-11-17 Chongjing Sun , Philip S. Yu , Xiangnan Kong , Yan Fu

Neural network-based image classifiers are powerful tools for computer vision tasks, but they inadvertently reveal sensitive attribute information about their classes, raising concerns about their privacy. To investigate this privacy…

Machine learning (ML) models have been shown to be vulnerable to Membership Inference Attacks (MIA), which infer the membership of a given data point in the target dataset by observing the prediction output of the ML model. While the key…

Large Language Models (LLMs) have the promise to revolutionize computing broadly, but their complexity and extensive training data also expose significant privacy vulnerabilities. One of the simplest privacy risks associated with LLMs is…

机器学习 · 计算机科学 2024-09-25 Rongting Zhang , Martin Bertran , Aaron Roth
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