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Federated Learning (FL) enables multiple devices to collaboratively train a shared model while ensuring data privacy. The selection of participating devices in each training round critically affects both the model performance and training…

Machine Learning · Computer Science 2024-05-08 Chunlin Tian , Zhan Shi , Xinpeng Qin , Li Li , Chengzhong Xu

Collaborative filtering algorithms capture underlying consumption patterns, including the ones specific to particular demographics or protected information of users, e.g. gender, race, and location. These encoded biases can influence the…

Information Retrieval · Computer Science 2022-06-10 Christian Ganhör , David Penz , Navid Rekabsaz , Oleg Lesota , Markus Schedl

Federated Learning (FL) enables collaborative model training without sharing raw data but suffers from limited scalability, high communication costs, and privacy risks due to its centralized architecture. This paper proposes FedSelect-ME, a…

Cryptography and Security · Computer Science 2025-11-05 Hanie Vatani , Reza Ebrahimi Atani

Large Language Models (LLMs) have empowered generative recommendation systems through fine-tuning user behavior data. However, utilizing the user data may pose significant privacy risks, potentially leading to ethical dilemmas and…

Information Retrieval · Computer Science 2025-02-25 Jujia Zhao , Wenjie Wang , Chen Xu , See-Kiong Ng , Tat-Seng Chua

Federated Learning (FL) has emerged as a crucial distributed training paradigm, enabling discrete devices to collaboratively train a shared model under the coordination of a central server, while leveraging their locally stored private…

Machine Learning · Computer Science 2024-09-02 Wenhao Yuan , Xuehe Wang

Federated learning enables collaborative training of machine learning models among different clients while ensuring data privacy, emerging as the mainstream for breaking data silos in the healthcare domain. However, the imbalance of medical…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 You Zhou , Lijiang Chen , Shuchang Lyu , Guangxia Cui , Wenpei Bai , Zheng Zhou , Meng Li , Guangliang Cheng , Huiyu Zhou , Qi Zhao

Federated recommendation is a new Internet service architecture that aims to provide privacy-preserving recommendation services in federated settings. Existing solutions are used to combine distributed recommendation algorithms and…

Information Retrieval · Computer Science 2023-05-16 Chunxu Zhang , Guodong Long , Tianyi Zhou , Peng Yan , Zijian Zhang , Chengqi Zhang , Bo Yang

Preserving privacy and reducing communication costs for edge users pose significant challenges in recommendation systems. Although federated learning has proven effective in protecting privacy by avoiding data exchange between clients and…

Machine Learning · Computer Science 2023-11-01 Lin Wang , Zhichao Wang , Xi Leng , Xiaoying Tang

Machine learning-based User Authentication (UA) models have been widely deployed in smart devices. UA models are trained to map input data of different users to highly separable embedding vectors, which are then used to accept or reject new…

Machine Learning · Computer Science 2020-07-10 Hossein Hosseini , Sungrack Yun , Hyunsin Park , Christos Louizos , Joseph Soriaga , Max Welling

Federated learning has created a decentralized method to train a machine learning model without needing direct access to client data. The main goal of a federated learning architecture is to protect the privacy of each client while still…

Cryptography and Security · Computer Science 2023-12-11 Marc Vucovich , Devin Quinn , Kevin Choi , Christopher Redino , Abdul Rahman , Edward Bowen

Recommender systems play a pivotal role across practical scenarios, showcasing remarkable capabilities in user preference modeling. However, the centralized learning paradigm predominantly used raises serious privacy concerns. The federated…

Information Retrieval · Computer Science 2024-11-05 Langming Liu , Wanyu Wang , Xiangyu Zhao , Zijian Zhang , Chunxu Zhang , Shanru Lin , Yiqi Wang , Lixin Zou , Zitao Liu , Xuetao Wei , Hongzhi Yin , Qing Li

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

Federated learning (FL) is a distributed machine learning paradigm enabling multiple clients to train a model collaboratively without exposing their local data. Among FL schemes, clustering is an effective technique addressing the…

Cryptography and Security · Computer Science 2025-04-01 Yunan Wei , Shengnan Zhao , Chuan Zhao , Zhe Liu , Zhenxiang Chen , Minghao Zhao

Federated Recommender Systems (FedRecs) are considered privacy-preserving techniques to collaboratively learn a recommendation model without sharing user data. Since all participants can directly influence the systems by uploading…

Information Retrieval · Computer Science 2023-04-18 Wei Yuan , Quoc Viet Hung Nguyen , Tieke He , Liang Chen , Hongzhi Yin

In deep reinforcement learning, building policies of high-quality is challenging when the feature space of states is small and the training data is limited. Despite the success of previous transfer learning approaches in deep reinforcement…

Machine Learning · Computer Science 2020-02-11 Hankz Hankui Zhuo , Wenfeng Feng , Yufeng Lin , Qian Xu , Qiang Yang

Federated learning learns a neural network model by aggregating the knowledge from a group of distributed clients under the privacy-preserving constraint. In this work, we show that this paradigm might inherit the adversarial vulnerability…

Machine Learning · Computer Science 2022-09-20 Yao Zhou , Jun Wu , Haixun Wang , Jingrui He

Federated Learning (FL) has emerged as a promising approach for privacy-preserving model training across decentralized devices. However, it faces challenges such as statistical heterogeneity and susceptibility to adversarial attacks, which…

Machine Learning · Computer Science 2024-12-13 Jialuo He , Wei Chen , Xiaojin Zhang

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

Recently, the practical needs of ``the right to be forgotten'' in federated learning gave birth to a paradigm known as federated unlearning, which enables the server to forget personal data upon the client's removal request. Existing…

Cryptography and Security · Computer Science 2025-01-22 Jian Chen , Zehui Lin , Wanyu Lin , Wenlong Shi , Xiaoyan Yin , Di Wang

Federated Distillation (FD) is a popular novel algorithmic paradigm for Federated Learning, which achieves training performance competitive to prior parameter averaging based methods, while additionally allowing the clients to train…

Machine Learning · Computer Science 2021-02-05 Felix Sattler , Tim Korjakow , Roman Rischke , Wojciech Samek