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Quantum Federated Learning (QFL) promises to revolutionize distributed machine learning by combining the computational power of quantum devices with collaborative model training. Yet, privacy of both data and models remains a critical…

Cryptography and Security · Computer Science 2025-12-04 Dev Gurung , Shiva Raj Pokhrel

Generative models have shown great promise in collaborative filtering by capturing the underlying distribution of user interests and preferences. However, existing approaches struggle with inaccurate posterior approximations and…

Information Retrieval · Computer Science 2025-09-08 Chengkai Liu , Yangtian Zhang , Jianling Wang , Rex Ying , James Caverlee

Nonnegative matrix factorization (NMF) is an effective data representation tool with numerous applications in signal processing and machine learning. However, deploying NMF in a decentralized manner over ad-hoc networks introduces privacy…

Cryptography and Security · Computer Science 2024-03-28 Ehsan Lari , Reza Arablouei , Stefan Werner

Federated Recommendation Systems (FRSs) offer a privacy-preserving alternative to traditional centralized approaches by decentralizing data storage. However, they face persistent challenges such as data sparsity and heterogeneity, largely…

Information Retrieval · Computer Science 2025-04-14 Zhiwei Li , Guodong Long , Chunxu Zhang , Honglei Zhang , Jing Jiang , Chengqi Zhang

Establishing how a set of learners can provide privacy-preserving federated learning in a fully decentralized (peer-to-peer, no coordinator) manner is an open problem. We propose the first privacy-preserving consensus-based algorithm for…

Cryptography and Security · Computer Science 2022-10-04 Yang Lu , Zhengxin Yu , Neeraj Suri

The randomized power method has gained significant interest due to its simplicity and efficient handling of large-scale spectral analysis and recommendation tasks. However, its application to large datasets containing personal information…

Machine Learning · Computer Science 2025-06-13 Julien Nicolas , César Sabater , Mohamed Maouche , Sonia Ben Mokhtar , Mark Coates

Cooperative decentralized learning relies on direct information exchange between communicating agents, each with access to locally available datasets. The goal is to agree on model parameters that are optimal over all data. However, sharing…

Machine Learning · Computer Science 2024-10-28 Jasmine Bayrooti , Zhan Gao , Amanda Prorok

Federated learning (FL) is recently surging as a promising decentralized deep learning (DL) framework that enables DL-based approaches trained collaboratively across clients without sharing private data. However, in the context of the…

Machine Learning · Computer Science 2023-02-24 Van-Tuan Tran , Huy-Hieu Pham , Kok-Seng Wong

We detail a new framework for privacy preserving deep learning and discuss its assets. The framework puts a premium on ownership and secure processing of data and introduces a valuable representation based on chains of commands and tensors.…

Machine Learning · Computer Science 2018-11-14 Theo Ryffel , Andrew Trask , Morten Dahl , Bobby Wagner , Jason Mancuso , Daniel Rueckert , Jonathan Passerat-Palmbach

In recent years, the financial sector has faced growing pressure to adopt advanced machine learning models to derive valuable insights while preserving data privacy. However, the highly sensitive nature of financial data presents…

Computational Engineering, Finance, and Science · Computer Science 2024-10-18 Peilin He , Chenkai Lin , Isabella Montoya

News recommendation is important for personalized online news services. Most existing news recommendation methods rely on centrally stored user behavior data to both train models offline and provide online recommendation services. However,…

Information Retrieval · Computer Science 2021-09-14 Tao Qi , Fangzhao Wu , Chuhan Wu , Yongfeng Huang , Xing Xie

Federated learning (FL) is a distributed machine learning technique designed to preserve data privacy and security, and it has gained significant importance due to its broad range of applications. This paper addresses the problem of optimal…

Statistics Theory · Mathematics 2025-01-16 Tony Cai , Abhinav Chakraborty , Lasse Vuursteen

Federated learning (FL), which is a decentralized machine learning (ML) approach, often incorporates differential privacy (DP) to provide rigorous data privacy guarantees. Previous works attempted to address high structured data…

Machine Learning · Computer Science 2025-04-30 Saber Malekmohammadi , Afaf Taik , Golnoosh Farnadi

News recommendation aims to display news articles to users based on their personal interest. Existing news recommendation methods rely on centralized storage of user behavior data for model training, which may lead to privacy concerns and…

Information Retrieval · Computer Science 2020-10-09 Tao Qi , Fangzhao Wu , Chuhan Wu , Yongfeng Huang , Xing Xie

Recommenders are central in many applications today. The most effective recommendation schemes, such as those based on collaborative filtering (CF), exploit similarities between user profiles to make recommendations, but potentially expose…

Distributed, Parallel, and Cluster Computing · Computer Science 2022-06-02 Akash Dhasade , Nevena Dresevic , Anne-Marie Kermarrec , Rafael Pires

Today, large amounts of valuable data are distributed among millions of user-held devices, such as personal computers, phones, or Internet-of-things devices. Many companies collect such data with the goal of using it for training machine…

Machine Learning · Computer Science 2020-08-21 Valentin Hartmann , Konark Modi , Josep M. Pujol , Robert West

This paper proposes a new recommendation system preserving both privacy and utility. It relies on the local differential privacy (LDP) for the browsing user to transmit his noisy preference profile, as perturbed Bloom filters, to the…

Cryptography and Security · Computer Science 2021-09-24 Seryne Rahali , Maryline Laurent , Souha Masmoudi , Charles Roux , Brice Mazeau

Collaborative filtering (CF) is widely used to learn informative latent representations of users and items from observed interactions. Existing CF-based methods commonly adopt negative sampling to discriminate different items. Training with…

Information Retrieval · Computer Science 2023-05-02 Xin Zhou , Aixin Sun , Yong Liu , Jie Zhang , Chunyan Miao

Federated learning enables collaborative model training across distributed institutions without centralizing sensitive data; however, ensuring algorithmic fairness across heterogeneous data distributions while preserving privacy remains…

Cryptography and Security · Computer Science 2026-02-16 Mohammed Himayath Ali , Mohammed Aqib Abdullah , Syed Muneer Hussain , Mohammed Mudassir Uddin , Shahnawaz Alam

With increasing frequency of high-profile privacy breaches in various online platforms, users are becoming more concerned about their privacy. And recommender system is the core component of online platforms for providing personalized…

Cryptography and Security · Computer Science 2024-01-31 Wentao Hu , Hui Fang