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Repeated parameter sharing in federated learning causes significant information leakage about private data, thus defeating its main purpose: data privacy. Mitigating the risk of this information leakage, using state of the art…

Machine Learning · Computer Science 2023-09-12 Zebang Shen , Jiayuan Ye , Anmin Kang , Hamed Hassani , Reza Shokri

Graph neural network (GNN)-based federated recommendation systems effectively capture user-item relationships while preserving data privacy. However, existing methods often face slow convergence on graph data and privacy leakage risks…

Information Retrieval · Computer Science 2026-03-27 Zhenxing Yan , Jidong Yuan , Yongqi Sun , Haiyang Liu , Zhihui Gao

Federated learning has emerged as a promising privacy-preserving solution for machine learning domains that rely on user interactions, particularly recommender systems and online learning to rank. While there has been substantial research…

Cryptography and Security · Computer Science 2025-03-04 Dzung Pham , Shreyas Kulkarni , Amir Houmansadr

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

In several practical applications of federated learning (FL), the clients are highly heterogeneous in terms of both their data and compute resources, and therefore enforcing the same model architecture for each client is very limiting.…

Machine Learning · Computer Science 2023-06-14 Disha Makhija , Joydeep Ghosh , Nhat Ho

Recommender systems have shown to be a successful representative of how data availability can ease our everyday digital life. However, data privacy is one of the most prominent concerns in the digital era. After several data breaches and…

Information Retrieval · Computer Science 2021-01-21 Vito Walter Anelli , Yashar Deldjoo , Tommaso Di Noia , Antonio Ferrara , Fedelucio Narducci

Federated learning (FL) has emerged as a collaborative approach that allows multiple clients to jointly learn a machine learning model without sharing their private data. The concern about privacy leakage, albeit demonstrated under specific…

Cryptography and Security · Computer Science 2024-06-04 Hanlin Gu , Jiahuan Luo , Yan Kang , Yuan Yao , Gongxi Zhu , Bowen Li , Lixin Fan , Qiang Yang

Federated Learning (FL) enables distributed machine learning training while preserving privacy, representing a paradigm shift for data-sensitive and decentralized environments. Despite its rapid advancements, FL remains a complex and…

Machine Learning · Computer Science 2025-05-14 Frederico Vicente , Cláudia Soares , Dušan Jakovetić

With the recent success of large language models, particularly foundation models with generalization abilities, applying foundation models for recommendations becomes a new paradigm to improve existing recommendation systems. It becomes a…

Information Retrieval · Computer Science 2024-05-09 Chunxu Zhang , Guodong Long , Hongkuan Guo , Xiao Fang , Yang Song , Zhaojie Liu , Guorui Zhou , Zijian Zhang , Yang Liu , Bo Yang

As in traditional machine learning models, models trained with federated learning may exhibit disparate performance across demographic groups. Model holders must identify these disparities to mitigate undue harm to the groups. However,…

Machine Learning · Computer Science 2023-01-12 Marc Juarez , Aleksandra Korolova

Differentially private federated learning is crucial for maintaining privacy in distributed environments. This paper investigates the challenges of high-dimensional estimation and inference under the constraints of differential privacy.…

Machine Learning · Statistics 2024-04-26 Zhe Zhang , Ryumei Nakada , Linjun Zhang

A Private Repetition algorithm takes as input a differentially private algorithm with constant success probability and boosts it to one that succeeds with high probability. These algorithms are closely related to private metaselection…

Cryptography and Security · Computer Science 2024-10-28 Kunal Talwar

Federated Learning (FL) is a collaborative scheme to train a learning model across multiple participants without sharing data. While FL is a clear step forward towards enforcing users' privacy, different inference attacks have been…

Cryptography and Security · Computer Science 2024-03-04 Théo Jourdan , Antoine Boutet , Carole Frindel

Federated learning (FL) enables collaborative model training across distributed clients without sharing raw data, making it a promising approach for privacy-preserving machine learning. However, ensuring differential privacy (DP) in FL…

Machine Learning · Computer Science 2025-03-28 Kanishka Ranaweera , David Smith , Pubudu N. Pathirana , Ming Ding , Thierry Rakotoarivelo , Aruna Seneviratne

Humans are capable of learning a new behavior by observing others perform the skill. Robots can also implement this by imitation learning. Furthermore, if with external guidance, humans will master the new behavior more efficiently. So how…

Robotics · Computer Science 2019-09-17 Boyi Liu , Lujia Wang , Ming Liu , Cheng-Zhong Xu

The increasingly stringent regulations on privacy protection have sparked interest in federated learning. As a distributed machine learning framework, it bridges isolated data islands by training a global model over devices while keeping…

Information Retrieval · Computer Science 2022-05-27 Zhitao Zhu , Shijing Si , Jianzong Wang , Jing Xiao

Matrix factorization models are the core of current commercial collaborative filtering Recommender Systems. This paper tested six representative matrix factorization models, using four collaborative filtering datasets. Experiments have…

Information Retrieval · Computer Science 2024-10-28 Jesús Bobadilla , Jorge Dueñas-Lerín , Fernando Ortega , Abraham Gutierrez

While recent years have witnessed the advancement in big data and Artificial Intelligence (AI), it is of much importance to safeguard data privacy and security. As an innovative approach, Federated Learning (FL) addresses these concerns by…

Cryptography and Security · Computer Science 2024-11-05 Chunlu Chen , Ji Liu , Haowen Tan , Xingjian Li , Kevin I-Kai Wang , Peng Li , Kouichi Sakurai , Dejing Dou

Federated Learning (FL) in the Internet of Things (IoT) environments can enhance machine learning by utilising decentralised data, but at the same time, it might introduce significant privacy and security concerns due to the constrained…

Cryptography and Security · Computer Science 2024-07-26 Adel ElZemity , Budi Arief

Federated learning (FL) has emerged as a promising framework for distributed machine learning. It enables collaborative learning among multiple clients, utilizing distributed data and computing resources. However, FL faces challenges in…

Machine Learning · Computer Science 2024-09-23 Hojat Allah Salehi , Md Jueal Mia , S. Sandeep Pradhan , M. Hadi Amini , Farhad Shirani