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Federated Learning allows distributed entities to train a common model collaboratively without sharing their own data. Although it prevents data collection and aggregation by exchanging only parameter updates, it remains vulnerable to…

Machine Learning · Computer Science 2020-11-12 Raouf Kerkouche , Gergely Ács , Claude Castelluccia , Pierre Genevès

We propose a privacy-preserving federated learning (FL) scheme that is resilient against straggling devices. An adaptive scenario is suggested where the slower devices share their data with the faster ones and do not participate in the…

Information Theory · Computer Science 2022-03-01 Marvin Xhemrishi , Alexandre Graell i Amat , Eirik Rosnes , Antonia Wachter-Zeh

Principal component analysis (PCA) is an essential algorithm for dimensionality reduction in many data science domains. We address the problem of performing a federated PCA on private data distributed among multiple data providers while…

Real-world data is usually segmented by attributes and distributed across different parties. Federated learning empowers collaborative training without exposing local data or models. As we demonstrate through designed attacks, even with a…

Machine Learning · Computer Science 2021-04-30 Shuang Zhang , Liyao Xiang , Xi Yu , Pengzhi Chu , Yingqi Chen , Chen Cen , Li Wang

This paper introduces \texttt{FedMPDD} (\textbf{Fed}erated Learning via \textbf{M}ulti-\textbf{P}rojected \textbf{D}irectional \textbf{D}erivatives), a novel algorithm that simultaneously optimizes bandwidth utilization and enhances privacy…

Machine Learning · Computer Science 2025-12-25 Mohammadreza Rostami , Solmaz S. Kia

Privacy protection and uncertainty quantification are increasingly important in data-driven decision making. Conformal prediction provides finite-sample marginal coverage, but existing private approaches often rely on data splitting,…

Machine Learning · Statistics 2026-03-10 Young Hyun Cho , Jordan Awan

The local model for differential privacy is emerging as the reference model for practical applications collecting and sharing sensitive information while satisfying strong privacy guarantees. In the local model, there is no trusted entity…

Statistics Theory · Mathematics 2018-03-12 Marco Gaboardi , Ryan Rogers

In federated learning (FL), a set of participants share updates computed on their local data with an aggregator server that combines updates into a global model. However, reconciling accuracy with privacy and security is a challenge to FL.…

Cryptography and Security · Computer Science 2022-11-22 Najeeb Moharram Jebreel , Josep Domingo-Ferrer , Alberto Blanco-Justicia , David Sanchez

Privacy in federated learning is crucial, encompassing two key aspects: safeguarding the privacy of clients' data and maintaining the privacy of the federator's objective from the clients. While the first aspect has been extensively…

Cryptography and Security · Computer Science 2025-05-01 Maximilian Egger , Rüdiger Urbanke , Rawad Bitar

Privacy has become a major concern in machine learning. In fact, the federated learning is motivated by the privacy concern as it does not allow to transmit the private data but only intermediate updates. However, federated learning does…

Machine Learning · Computer Science 2022-09-19 Qiongxiu Li , Jaron Skovsted Gundersen , Katrine Tjell , Rafal Wisniewski , Mads Græsbøll Christensen

Federated Learning (FL) is gaining popularity as a distributed learning framework that only shares model parameters or gradient updates and keeps private data locally. However, FL is at risk of privacy leakage caused by privacy inference…

Machine Learning · Computer Science 2024-09-17 Kangyang Luo , Shuai Wang , Xiang Li , Yunshi Lan , Ming Gao , Jinlong Shu

Distributed data analysis without revealing the individual data has recently attracted significant attention in several applications. A collaborative data analysis through sharing dimensionality reduced representations of data has been…

Machine Learning · Computer Science 2021-01-28 Akira Imakura , Anna Bogdanova , Takaya Yamazoe , Kazumasa Omote , Tetsuya Sakurai

Federated Learning (FL) is a machine learning paradigm where local nodes collaboratively train a central model while the training data remains decentralized. Existing FL methods typically share model parameters or employ co-distillation to…

Cryptography and Security · Computer Science 2022-09-13 Xuan Gong , Abhishek Sharma , Srikrishna Karanam , Ziyan Wu , Terrence Chen , David Doermann , Arun Innanje

Federated learning facilitates the collaborative training of models without the sharing of raw data. However, recent attacks demonstrate that simply maintaining data locality during training processes does not provide sufficient privacy…

Machine Learning · Computer Science 2019-08-16 Stacey Truex , Nathalie Baracaldo , Ali Anwar , Thomas Steinke , Heiko Ludwig , Rui Zhang , Yi Zhou

Federated learning (FL) enables collaborative model training by aggregating local updates without requiring raw data sharing. However, prior studies have shown that servers can exploit gradient inversion to compromise user privacy or…

Cryptography and Security · Computer Science 2026-05-26 Yufei Zhou

During Financial Cryptography 2012 Chan et al. presented a novel privacy-protection fault-tolerant data aggregation protocol. Comparing to previous work, their scheme guaranteed provable privacy of individuals and could work even if some…

Cryptography and Security · Computer Science 2016-06-01 Krzysztof Grining , Marek Klonowski , Piotr Syga

Federated Learning (FL) is a distributed training paradigm wherein participants collaborate to build a global model while ensuring the privacy of the involved data, which remains stored on participant devices. However, proposals aiming to…

Machine Learning · Computer Science 2025-11-05 Nicolas Riccieri Gardin Assumpcao , Leandro Villas

Federated learning has emerged as a powerful framework for analysing distributed data, yet two challenges remain pivotal: heterogeneity across sites and privacy of local data. In this paper, we address both challenges within a federated…

Machine Learning · Computer Science 2026-04-07 Mengchu Li , Ye Tian , Yang Feng , Yi Yu

In federated learning, multiple parties collaborate in order to train a global model over their respective datasets. Even though cryptographic primitives (e.g., homomorphic encryption) can help achieve data privacy in this setting, some…

Cryptography and Security · Computer Science 2020-11-13 Javad Ghareh Chamani , Dimitrios Papadopoulos

Federated learning (FL) is a new paradigm that enables many clients to jointly train a machine learning (ML) model under the orchestration of a parameter server while keeping the local data not being exposed to any third party. However, the…

Machine Learning · Computer Science 2022-04-27 Yiwei Li , Shuai Wang , Tsung-Hui Chang , Chong-Yung Chi