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Generative classifiers offer potential advantages over their discriminative counterparts, namely in the areas of data efficiency, robustness to data shift and adversarial examples, and zero-shot learning (Ng and Jordan,2002; Yogatama et…

Computation and Language · Computer Science 2019-10-02 Xiaoan Ding , Kevin Gimpel

Differential privacy guarantees allow the results of a statistical analysis involving sensitive data to be released without compromising the privacy of any individual taking part. Achieving such guarantees generally requires the injection…

Machine Learning · Statistics 2023-10-31 Jack Jewson , Sahra Ghalebikesabi , Chris Holmes

Background: Synthetic data has been proposed as a solution for sharing anonymized versions of sensitive biomedical datasets. Ideally, synthetic data should preserve the structure and statistical properties of the original data, while…

Machine Learning · Computer Science 2024-10-24 Ileana Montoya Perez , Parisa Movahedi , Valtteri Nieminen , Antti Airola , Tapio Pahikkala

This paper proposes a method to generate synthetic data for spatial point patterns within the differential privacy (DP) framework. Specifically, we define a differentially private Poisson point synthesizer (PPS) and Cox point synthesizer…

Applications · Statistics 2025-02-26 Dangchan Kim , Chae Young Lim

In this paper, we propose generating artificial data that retain statistical properties of real data as the means of providing privacy with respect to the original dataset. We use generative adversarial network to draw privacy-preserving…

Machine Learning · Computer Science 2019-04-30 Aleksei Triastcyn , Boi Faltings

Prior work on differential privacy analysis of randomized SGD algorithms relies on composition theorems, where the implicit (unrealistic) assumption is that the internal state of the iterative algorithm is revealed to the adversary. As a…

Machine Learning · Statistics 2022-10-18 Jiayuan Ye , Reza Shokri

The recent developments of Diffusion Models (DMs) enable generation of astonishingly high-quality synthetic samples. Recent work showed that the synthetic samples generated by the diffusion model, which is pre-trained on public data and…

Machine Learning · Computer Science 2024-06-11 Jing Liu , Andrew Lowy , Toshiaki Koike-Akino , Kieran Parsons , Ye Wang

In this paper, we present a notion of differential privacy (DP) for data that comes from different classes. Here, the class-membership is private information that needs to be protected. The proposed method is an output perturbation…

Signal Processing · Electrical Eng. & Systems 2023-06-12 Raksha Ramakrishna , Anna Scaglione , Tong Wu , Nikhil Ravi , Sean Peisert

Deep learning methods have impacted almost every research field, demonstrating notable successes in medical imaging tasks such as denoising and super-resolution. However, the prerequisite for deep learning is data at scale, but data sharing…

Medical Physics · Physics 2024-02-16 Yongyi Shi , Wenjun Xia , Chuang Niu , Christopher Wiedeman , Ge Wang

Recent advancements in generative AI have made it possible to create synthetic datasets that can be as accurate as real-world data for training AI models, powering statistical insights, and fostering collaboration with sensitive datasets…

Machine Learning · Computer Science 2025-01-08 Amy Steier , Lipika Ramaswamy , Andre Manoel , Alexa Haushalter

Deep learning techniques based on neural networks have shown significant success in a wide range of AI tasks. Large-scale training datasets are one of the critical factors for their success. However, when the training datasets are…

Cryptography and Security · Computer Science 2019-12-23 Lei Yu , Ling Liu , Calton Pu , Mehmet Emre Gursoy , Stacey Truex

While deep models have proved successful in learning rich knowledge from massive well-annotated data, they may pose a privacy leakage risk in practical deployment. It is necessary to find an effective trade-off between high utility and…

Machine Learning · Computer Science 2024-09-05 Shiming Ge , Bochao Liu , Pengju Wang , Yong Li , Dan Zeng

We propose a general approach for differentially private synthetic data generation, that consists of three steps: (1) select a collection of low-dimensional marginals, (2) measure those marginals with a noise addition mechanism, and (3)…

Cryptography and Security · Computer Science 2021-08-12 Ryan McKenna , Gerome Miklau , Daniel Sheldon

In noisy label learning, estimating noisy class posteriors plays a fundamental role for developing consistent classifiers, as it forms the basis for estimating clean class posteriors and the transition matrix. Existing methods typically…

Computer Vision and Pattern Recognition · Computer Science 2024-07-03 Rui Zhao , Bin Shi , Jianfei Ruan , Tianze Pan , Bo Dong

We propose two synthetic microdata approaches to generate private tabular survey data products for public release. We adapt a pseudo posterior mechanism that downweights by-record likelihood contributions with weights $\in [0,1]$ based on…

Methodology · Statistics 2022-03-07 Jingchen Hu , Terrance D. Savitsky , Matthew R. Williams

Making evidence based decisions requires data. However for real-world applications, the privacy of data is critical. Using synthetic data which reflects certain statistical properties of the original data preserves the privacy of the…

Machine Learning · Computer Science 2021-05-28 Varun Chandrasekaran , Darren Edge , Somesh Jha , Amit Sharma , Cheng Zhang , Shruti Tople

The proliferation of smart meters has resulted in a large amount of data being generated. It is increasingly apparent that methods are required for allowing a variety of stakeholders to leverage the data in a manner that preserves the…

Signal Processing · Electrical Eng. & Systems 2022-06-29 Nikhil Ravi , Anna Scaglione , Sachin Kadam , Reinhard Gentz , Sean Peisert , Brent Lunghino , Emmanuel Levijarvi , Aram Shumavon

This paper considers the problem of enhancing user privacy in common machine learning development tasks, such as data annotation and inspection, by substituting the real data with samples form a generative adversarial network. We propose…

Machine Learning · Statistics 2020-03-03 Aleksei Triastcyn , Boi Faltings

Differentially private (DP) synthetic data is a promising approach to maximizing the utility of data containing sensitive information. Due to the suppression of underrepresented classes that is often required to achieve privacy, however, it…

Machine Learning · Computer Science 2022-06-22 Blake Bullwinkel , Kristen Grabarz , Lily Ke , Scarlett Gong , Chris Tanner , Joshua Allen

We study private prediction where differential privacy is achieved by adding noise to the outputs of a non-private model. Existing methods rely on noise proportional to the global sensitivity of the model, often resulting in sub-optimal…