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Differentially Private Stochastic Gradients Descent (DP-SGD) is a prominent paradigm for preserving privacy in deep learning. It ensures privacy by perturbing gradients with random noise calibrated to their entire norm at each training…

密码学与安全 · 计算机科学 2024-06-06 Yixuan Liu , Li Xiong , Yuhan Liu , Yujie Gu , Ruixuan Liu , Hong Chen

Learning on graphs is becoming prevalent in a wide range of applications including social networks, robotics, communication, medicine, etc. These datasets belonging to entities often contain critical private information. The utilization of…

机器学习 · 计算机科学 2023-05-22 Nimesh Agrawal , Nikita Malik , Sandeep Kumar

Nowadays, differential privacy (DP) has become a well-accepted standard for privacy protection, and deep neural networks (DNN) have been immensely successful in machine learning. The combination of these two techniques, i.e., deep learning…

密码学与安全 · 计算机科学 2024-08-02 Jianxin Wei , Ergute Bao , Xiaokui Xiao , Yin Yang

Graph Neural Networks (GNNs) have shown remarkable success in various graph-based learning tasks. However, recent studies have raised concerns about fairness and privacy issues in GNNs, highlighting the potential for biased or…

机器学习 · 计算机科学 2025-03-05 Bartlomiej Surma , Michael Backes , Yang Zhang

We initiate an empirical investigation into differentially private graph neural networks on population graphs from the medical domain by examining privacy-utility trade-offs at different privacy levels on both real-world and synthetic…

机器学习 · 计算机科学 2023-07-14 Tamara T. Mueller , Maulik Chevli , Ameya Daigavane , Daniel Rueckert , Georgios Kaissis

We study differential privacy (DP) in a multi-party setting where each party only trusts a (known) subset of the other parties with its data. Specifically, given a trust graph where vertices correspond to parties and neighbors are mutually…

密码学与安全 · 计算机科学 2024-10-17 Badih Ghazi , Ravi Kumar , Pasin Manurangsi , Serena Wang

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…

机器学习 · 计算机科学 2021-11-18 Xu Zheng , Nicholas McCarthy , Jer Hayes

This paper presents a personalized graph federated learning (PGFL) framework in which distributedly connected servers and their respective edge devices collaboratively learn device or cluster-specific models while maintaining the privacy of…

机器学习 · 计算机科学 2023-10-31 Francois Gauthier , Vinay Chakravarthi Gogineni , Stefan Werner , Yih-Fang Huang , Anthony Kuh

Differentially private learning is essential for training models on sensitive data, but empirical studies consistently show that it can degrade performance, introduce fairness issues like disparate impact, and reduce adversarial robustness.…

机器学习 · 计算机科学 2026-04-21 Ruichen Xu , Kexin Chen

Graph Neural Networks (GNNs) have achieved significant success in learning better representations by performing feature propagation and transformation iteratively to leverage neighborhood information. Nevertheless, iterative propagation…

机器学习 · 计算机科学 2021-08-26 Yu Wang , Tyler Derr

In this work, we study the problem of decentralized multi-agent perimeter defense that asks for computing actions for defenders with local perceptions and communications to maximize the capture of intruders. One major challenge for…

多智能体系统 · 计算机科学 2023-01-25 Elijah S. Lee , Lifeng Zhou , Alejandro Ribeiro , Vijay Kumar

Computing the principal component (PC) of the adjacency matrix of an undirected graph has several applications ranging from identifying key vertices for influence maximization and controlling diffusion processes, to discovering densely…

数据结构与算法 · 计算机科学 2026-03-06 Alireza Khayatian , Anil Vullikanti , Aritra Konar

Many high-stakes applications require machine learning models that protect user privacy and provide well-calibrated, accurate predictions. While Differential Privacy (DP) is the gold standard for protecting user privacy, standard DP…

Fraud detection on graph data can be viewed as a demanding task that requires distinguishing between different types of nodes. Because graph neural networks (GNNs) are naturally suited for processing information encoded in graph form…

机器学习 · 计算机科学 2026-04-17 Wei He , Wensheng Gan , Philip S. Yu

Many real-world data comes in the form of graphs, such as social networks and protein structure. To fully utilize the information contained in graph data, a new family of machine learning (ML) models, namely graph neural networks (GNNs),…

密码学与安全 · 计算机科学 2021-02-11 Xinlei He , Rui Wen , Yixin Wu , Michael Backes , Yun Shen , Yang Zhang

Densest subgraph detection is a fundamental graph mining problem, with a large number of applications. There has been a lot of work on efficient algorithms for finding the densest subgraph in massive networks. However, in many domains, the…

数据结构与算法 · 计算机科学 2024-06-05 Dung Nguyen , Anil Vullikanti

Data privacy has become an increasingly important issue in Machine Learning (ML), where many approaches have been developed to tackle this challenge, e.g. cryptography (Homomorphic Encryption (HE), Differential Privacy (DP), etc.) and…

机器学习 · 计算机科学 2022-09-13 Hanchi Ren , Jingjing Deng , Xianghua Xie

Graph research, the systematic study of interconnected data points represented as graphs, plays a vital role in capturing intricate relationships within networked systems. However, in the real world, as graphs scale up, concerns about data…

机器学习 · 计算机科学 2023-11-08 Qiang Wu , Yiming Huang , Yujie Zeng , Yijie Teng , Fang Zhou , Linyuan Lü

The decoupled Graph Convolutional Network (GCN), a recent development of GCN that decouples the neighborhood aggregation and feature transformation in each convolutional layer, has shown promising performance for graph representation…

机器学习 · 计算机科学 2022-11-16 Jinsong Chen , Boyu Li , Kun He

Graphs are widely used to model the complex relationships among entities. As a powerful tool for graph analytics, graph neural networks (GNNs) have recently gained wide attention due to its end-to-end processing capabilities. With the…

密码学与安全 · 计算机科学 2023-02-01 Songlei Wang , Yifeng Zheng , Xiaohua Jia