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While diffusion models excel at generating high-quality images, their tendency to memorize training data poses significant privacy and copyright risks. In this work, we for the first time identify that memorization induces internal…

计算机视觉与模式识别 · 计算机科学 2026-05-27 Yuanmin Huang , Mi Zhang , Chen Chen , Feifei Li , Geng Hong , Xiaoyu You , Min Yang

Diffusion probabilistic models have become a cornerstone of modern generative AI, yet the mechanisms underlying their generalization remain poorly understood. In fact, if these models were perfectly minimizing their training loss, they…

机器学习 · 计算机科学 2025-09-03 Alessandro Favero , Antonio Sclocchi , Matthieu Wyart

A Membership Inference Attack (MIA) assesses how much a target machine learning model reveals about its training data by determining whether specific query instances were part of the training set. State-of-the-art MIAs rely on training…

密码学与安全 · 计算机科学 2026-01-13 Yuntao Du , Yuetian Chen , Hanshen Xiao , Bruno Ribeiro , Ninghui Li

Recently, diffusion models have achieved remarkable success in generating tasks, including image and audio generation. However, like other generative models, diffusion models are prone to privacy issues. In this paper, we propose an…

声音 · 计算机科学 2023-10-10 Fei Kong , Jinhao Duan , RuiPeng Ma , Hengtao Shen , Xiaofeng Zhu , Xiaoshuang Shi , Kaidi Xu

Large Language Models (LLMs) are increasingly deployed to enable or improve a multitude of real-world applications. Given the large size of their training data sets, their tendency to memorize training data raises serious privacy and…

机器学习 · 计算机科学 2026-01-27 Pedram Zaree , Md Abdullah Al Mamun , Yue Dong , Ihsen Alouani , Nael Abu-Ghazaleh

Federated learning (FL) is a popular paradigm for collaborative training which avoids direct data exposure between clients. However, data privacy issues still remain: FL-trained large language models are capable of memorizing and completing…

机器学习 · 计算机科学 2026-03-10 Thierry Bossy , Julien Vignoud , Tahseen Rabbani , Juan R. Troncoso Pastoriza , Martin Jaggi

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

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

The widespread use of diffusion models has led to an abundance of AI-generated data, raising concerns about model collapse -- a phenomenon in which recursive iterations of training on synthetic data lead to performance degradation. Prior…

机器学习 · 计算机科学 2025-12-29 Lianghe Shi , Meng Wu , Huijie Zhang , Zekai Zhang , Molei Tao , Qing Qu

Membership Inference Attacks (MIAs) have emerged as a principled framework for auditing the privacy of synthetic data generated by tabular generative models, where many diverse methods have been proposed that each exploit different privacy…

密码学与安全 · 计算机科学 2025-09-09 Joshua Ward , Yuxuan Yang , Chi-Hua Wang , Guang Cheng

Rectified-Flow (RF)-based generative models have recently emerged as strong alternatives to traditional diffusion models, demonstrating state-of-the-art performance across various tasks. By learning a continuous velocity field that…

计算机视觉与模式识别 · 计算机科学 2026-02-16 Chenru Wang , Beier Zhu , Chi Zhang

The primary promise of decentralized learning is to allow users to engage in the training of machine learning models in a collaborative manner while keeping their data on their premises and without relying on any central entity. However,…

This paper introduces a novel approach to membership inference attacks (MIA) targeting stable diffusion computer vision models, specifically focusing on the highly sophisticated Stable Diffusion V2 by StabilityAI. MIAs aim to extract…

计算机视觉与模式识别 · 计算机科学 2023-11-17 Thomas Cilloni , Charles Fleming , Charles Walter

Among all privacy attacks against Machine Learning (ML), membership inference attacks (MIA) attracted the most attention. In these attacks, the attacker is given an ML model and a data point, and they must infer whether the data point was…

密码学与安全 · 计算机科学 2025-12-02 Bram van Dartel , Marc Damie , Florian Hahn

Generative models can unintentionally memorize training data, posing significant privacy risks. This paper addresses the memorization phenomenon in time series imputation models, introducing the Loss-Based with Reference Model (LBRM)…

机器学习 · 计算机科学 2025-05-07 Faiz Taleb , Ivan Gazeau , Maryline Laurent

Membership inference attacks (MIAs) pose a significant threat to the privacy of machine learning models and are widely used as tools for privacy assessment, auditing, and machine unlearning. While prior MIA research has primarily focused on…

机器学习 · 计算机科学 2025-07-04 Zhiqi Wang , Chengyu Zhang , Yuetian Chen , Nathalie Baracaldo , Swanand Kadhe , Lei Yu

Membership inference attacks aim to detect if a particular data point was used in training a model. We design a novel statistical test to perform robust membership inference attacks (RMIA) with low computational overhead. We achieve this by…

机器学习 · 统计学 2024-06-13 Sajjad Zarifzadeh , Philippe Liu , Reza Shokri

Membership inference attacks (MIAs) aim to determine whether a specific example was used to train a given language model. While prior work has explored prompt-based attacks such as ReCALL, these methods rely heavily on the assumption that…

计算与语言 · 计算机科学 2026-01-27 Gyuwan Kim , Yang Li , Evangelia Spiliopoulou , Jie Ma , William Yang Wang

We study the memorization and generalization capabilities of Diffusion Models (DMs) when data lies on a structured latent manifold. Specifically, we consider a set of $P$ data points in $N$ dimensions confined to a latent subspace of…

无序系统与神经网络 · 物理学 2025-05-27 Beatrice Achilli , Luca Ambrogioni , Carlo Lucibello , Marc Mézard , Enrico Ventura

Membership Inference Attacks (MIAs) are currently a dominant approach for evaluating privacy in machine learning applications. Despite their significance in identifying records belonging to the training dataset, several concerns remain…

机器学习 · 计算机科学 2026-01-23 Cristina Pêra , Tânia Carvalho , Maxime Cordy , Luís Antunes