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Link prediction (LP) algorithms propose to each node a ranked list of nodes that are currently non-neighbors, as the most likely candidates for future linkage. Owing to increasing concerns about privacy, users (nodes) may prefer to keep…

Social and Information Networks · Computer Science 2020-12-15 Abir De , Soumen Chakrabarti

Differential privacy (DP) provides a provable framework for protecting individuals by customizing a random mechanism over a privacy-sensitive dataset. Deep learning models have demonstrated privacy risks in model exposure as an established…

Cryptography and Security · Computer Science 2025-08-06 Yu Zheng , Wenchao Zhang , Yonggang Zhang , Yuxiang Peng , Wei Song , Kai Zhou , Xiaojiang Du , Bo Han

Data privacy is an important concern in machine learning, and is fundamentally at odds with the task of training useful learning models, which typically require the acquisition of large amounts of private user data. One possible way of…

Machine Learning · Computer Science 2019-02-14 Mehrdad Showkatbakhsh , Can Karakus , Suhas Diggavi

Federated Learning (FL) enables collaborative model training without data sharing, yet participants face a fundamental challenge, e.g., simultaneously ensuring fairness across demographic groups while protecting sensitive client data. We…

Machine Learning · Computer Science 2026-04-30 Kangkang Sun , Jun Wu , Minyi Guo , Jianhua Li , Jianwei Huang

A key feature of federated learning (FL) is to preserve the data privacy of end users. However, there still exist potential privacy leakage in exchanging gradients under FL. As a result, recent research often explores the differential…

Cryptography and Security · Computer Science 2024-03-20 Yuntao Wang , Zhou Su , Yanghe Pan , Tom H Luan , Ruidong Li , Shui Yu

Federated learning (FL) has become an emerging machine learning technique lately due to its efficacy in safeguarding the client's confidential information. Nevertheless, despite the inherent and additional privacy-preserving mechanisms…

Cryptography and Security · Computer Science 2021-09-22 Md Tamjid Hossain , Shafkat Islam , Shahriar Badsha , Haoting Shen

Federated Learning (FL) enables collaborative training of models across distributed clients without sharing local data, addressing privacy concerns in decentralized systems. However, the gradient-sharing process exposes private data to…

Machine Learning · Computer Science 2025-03-11 Mingcong Xu , Xiaojin Zhang , Wei Chen , Hai Jin

We propose a general learning framework for the protection mechanisms that protects privacy via distorting model parameters, which facilitates the trade-off between privacy and utility. The algorithm is applicable to arbitrary privacy…

Machine Learning · Computer Science 2023-06-06 Xiaojin Zhang , Wenjie Li , Kai Chen , Shutao Xia , Qiang Yang

When collecting information, local differential privacy (LDP) alleviates privacy concerns of users because their private information is randomized before being sent it to the central aggregator. LDP imposes large amount of noise as each…

Cryptography and Security · Computer Science 2020-08-04 Tianhao Wang , Bolin Ding , Min Xu , Zhicong Huang , Cheng Hong , Jingren Zhou , Ninghui Li , Somesh Jha

This paper considers subject level privacy in the FL setting, where a subject is an individual whose private information is embodied by several data items either confined within a single federation user or distributed across multiple…

Machine Learning · Computer Science 2023-06-16 Virendra J. Marathe , Pallika Kanani , Daniel W. Peterson , Guy Steele

Federated learning(FL) is an emerging distributed learning paradigm with default client privacy because clients can keep sensitive data on their devices and only share local training parameter updates with the federated server. However,…

Machine Learning · Computer Science 2021-07-05 Wenqi Wei , Ling Liu , Yanzhao Wu , Gong Su , Arun Iyengar

Federated learning (FL) is a distributed machine learning (ML) framework where multiple clients collaborate to train a model without exposing their private data. FL involves cycles of local computations and bi-directional communications…

Cryptography and Security · Computer Science 2023-08-22 Xiangjian Hou , Sarit Khirirat , Mohammad Yaqub , Samuel Horvath

Balancing differential privacy (DP) with recommendation accuracy is a key challenge in privacy-preserving recommender systems, since DP-noise degrades accuracy. We address this trade-off at both the data and model levels. At the data level,…

Information Retrieval · Computer Science 2026-05-13 Peter Müllner , Dominik Kowald , Markus Schedl , Elisabeth Lex

Federated learning (FL) is an emerging machine learning paradigm designed to address the challenge of data silos, attracting considerable attention. However, FL encounters persistent issues related to fairness and data privacy. To tackle…

Cryptography and Security · Computer Science 2026-01-08 Xinpeng Ling , Jie Fu , Kuncan Wang , Huifa Li , Tong Cheng , Zhili Chen

In federated learning (FL), clients cooperatively train a global model without revealing their raw data but gradients or parameters, while the local information can still be disclosed from local outputs transmitted to the parameter server.…

Computer Science and Game Theory · Computer Science 2023-02-27 Shu Hong , Lingjie Duan

Differential privacy (DP) is the standard for privacy-preserving analysis, and introduces a fundamental trade-off between privacy guarantees and model performance. Selecting the optimal balance is a critical challenge that can be framed as…

Machine Learning · Computer Science 2025-09-05 Yaohong Yang , Aki Rehn , Sammie Katt , Antti Honkela , Samuel Kaski

Neural language models are known to have a high capacity for memorization of training samples. This may have serious privacy implications when training models on user content such as email correspondence. Differential privacy (DP), a…

Federated learning (FL) takes a first step towards privacy-preserving machine learning by training models while keeping client data local. Models trained using FL may still leak private client information through model updates during…

Machine Learning · Computer Science 2023-01-18 Nasser Aldaghri , Hessam Mahdavifar , Ahmad Beirami

Federated learning is a distributed learning setting where the main aim is to train machine learning models without having to share raw data but only what is required for learning. To guarantee training data privacy and high-utility models,…

Machine Learning · Computer Science 2025-03-26 Mikko A. Heikkilä

In this paper, we propose the discrete Gaussian based differentially private federated learning (D2P-Fed), a unified scheme to achieve both differential privacy (DP) and communication efficiency in federated learning (FL). In particular,…

Machine Learning · Statistics 2021-01-05 Lun Wang , Ruoxi Jia , Dawn Song