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Retrieval-Augmented Generation (RAG) enhances large language models (LLMs) by grounding them in external knowledge. However, its application in sensitive domains is limited by privacy risks. Existing private RAG methods typically rely on…

Cryptography and Security · Computer Science 2026-05-13 Junki Mori , Kazuya Kakizaki , Taiki Miyagawa , Jun Sakuma

High quality data is needed to unlock the full potential of AI for end users. However finding new sources of such data is getting harder: most publicly-available human generated data will soon have been used. Additionally, publicly…

Generative models are used in a wide range of applications building on large amounts of contextually rich information. Due to possible privacy violations of the individuals whose data is used to train these models, however, publishing or…

Machine Learning · Computer Science 2018-07-16 Gergely Acs , Luca Melis , Claude Castelluccia , Emiliano De Cristofaro

We consider the problem of generating private synthetic versions of real-world graphs containing private information while maintaining the utility of generated graphs. Differential privacy is a gold standard for data privacy, and the…

Machine Learning · Computer Science 2021-11-18 Xu Zheng , Nicholas McCarthy , Jer Hayes

Privacy is an important concern for our society where sharing data with partners or releasing data to the public is a frequent occurrence. Some of the techniques that are being used to achieve privacy are to remove identifiers, alter…

Databases · Computer Science 2018-07-04 Noseong Park , Mahmoud Mohammadi , Kshitij Gorde , Sushil Jajodia , Hongkyu Park , Youngmin Kim

Differential Privacy (DP) image data synthesis, which leverages the DP technique to generate synthetic data to replace the sensitive data, allowing organizations to share and utilize synthetic images without privacy concerns. Previous…

Computer Vision and Pattern Recognition · Computer Science 2024-10-10 Kecen Li , Chen Gong , Zhixiang Li , Yuzhong Zhao , Xinwen Hou , Tianhao Wang

Releasing full data records is one of the most challenging problems in data privacy. On the one hand, many of the popular techniques such as data de-identification are problematic because of their dependence on the background knowledge of…

Cryptography and Security · Computer Science 2017-08-29 Vincent Bindschaedler , Reza Shokri , Carl A. Gunter

Differentially private synthetic data is a promising alternative for sensitive data release. Many differentially private generative models have been proposed in the literature. Unfortunately, they all suffer from the low utility of the…

Computer Vision and Pattern Recognition · Computer Science 2023-04-25 Chih-Hsun Lin , Chia-Yi Hsu , Chia-Mu Yu , Yang Cao , Chun-Ying Huang

Data privacy is a core tenet of responsible computing, and in the United States, differential privacy (DP) is the dominant technical operationalization of privacy-preserving data analysis. With this study, we qualitatively examine one class…

Human-Computer Interaction · Computer Science 2024-12-18 Lucas Rosenblatt , Bill Howe , Julia Stoyanovich

Motivated by privacy concerns in long-term longitudinal studies in medical and social science research, we study the problem of continually releasing differentially private synthetic data from longitudinal data collections. We introduce a…

Data Structures and Algorithms · Computer Science 2024-05-28 Mark Bun , Marco Gaboardi , Marcel Neunhoeffer , Wanrong Zhang

Retrieval-Augmented Generation (RAG) has emerged as the dominant technique to provide \emph{Large Language Models} (LLM) with fresh and relevant context, mitigating the risk of hallucinations and improving the overall quality of responses…

Machine Learning · Computer Science 2025-01-23 Nicolas Grislain

A major challenge for machine learning is increasing the availability of data while respecting the privacy of individuals. Here we combine the provable privacy guarantees of the differential privacy framework with the flexibility of…

Machine Learning · Statistics 2019-01-18 Michael Thomas Smith , Max Zwiessele , Neil D. Lawrence

Graph data is increasingly prevalent across domains, offering analytical value but raising significant privacy concerns. Edges may encode sensitive relationships, while node attributes may contain sensitive entity or personal data.…

Cryptography and Security · Computer Science 2026-04-07 Nicholas D'Silva , Surya Nepal , Salil S. Kanhere

We present an approach for generating differentially private synthetic text using large language models (LLMs), via private prediction. In the private prediction framework, we only require the output synthetic data to satisfy differential…

Machine Learning · Computer Science 2024-10-10 Kareem Amin , Alex Bie , Weiwei Kong , Alexey Kurakin , Natalia Ponomareva , Umar Syed , Andreas Terzis , Sergei Vassilvitskii

While data sharing is crucial for knowledge development, privacy concerns and strict regulation (e.g., European General Data Protection Regulation (GDPR)) unfortunately limits its full effectiveness. Synthetic tabular data emerges as an…

Machine Learning · Computer Science 2021-08-24 Aditya Kunar

When sharing data among researchers or releasing data for public use, there is a risk of exposing sensitive information of individuals in the data set. Data synthesis (DS) is a statistical disclosure limitation technique for releasing…

Methodology · Statistics 2020-07-01 Claire McKay Bowen , Fang Liu

To improve real-world applications of machine learning, experienced modelers develop intuition about their datasets, their models, and how the two interact. Manual inspection of raw data - of representative samples, of outliers, of…

Process mining is rapidly growing in the industry. Consequently, privacy concerns regarding sensitive and private information included in event data, used by process mining algorithms, are becoming increasingly relevant. State-of-the-art…

Machine Learning · Computer Science 2023-03-30 Majid Rafiei , Frederik Wangelik , Mahsa Pourbafrani , Wil M. P. van der Aalst

Synthetic data created by differentially private (DP) generative models is increasingly used in real-world settings. In this context, PATE-GAN has emerged as one of the most popular algorithms, combining Generative Adversarial Networks…

Machine Learning · Computer Science 2025-02-11 Georgi Ganev , Meenatchi Sundaram Muthu Selva Annamalai , Emiliano De Cristofaro

While massive valuable deep models trained on large-scale data have been released to facilitate the artificial intelligence community, they may encounter attacks in deployment which leads to privacy leakage of training data. In this work,…

Cryptography and Security · Computer Science 2023-08-04 Bochao Liu , Pengju Wang , Shikun Li , Dan Zeng , Shiming Ge