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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

Federated Recommendation (FR) has received considerable popularity and attention in the past few years. In FR, for each user, its feature vector and interaction data are kept locally on its own client thus are private to others. Without the…

Cryptography and Security · Computer Science 2025-11-11 Dazhong Rong , Shuai Ye , Ruoyan Zhao , Hon Ning Yuen , Jianhai Chen , Qinming He

Recommender systems can be privacy-sensitive. To protect users' private historical interactions, federated learning has been proposed in distributed learning for user representations. Using federated recommender (FedRec) systems, users can…

Information Retrieval · Computer Science 2023-12-29 Qi Hu , Yangqiu Song

To make room for privacy and efficiency, the deployment of many recommender systems is experiencing a shift from central servers to personal devices, where the federated recommender systems (FedRecs) and decentralized collaborative…

Cryptography and Security · Computer Science 2024-04-02 Ruiqi Zheng , Liang Qu , Tong Chen , Kai Zheng , Yuhui Shi , Hongzhi Yin

Federated learning (FL) is a feasible technique to learn personalized recommendation models from decentralized user data. Unfortunately, federated recommender systems are vulnerable to poisoning attacks by malicious clients. Existing…

Information Retrieval · Computer Science 2022-02-11 Chuhan Wu , Fangzhao Wu , Tao Qi , Yongfeng Huang , Xing Xie

Federated Recommender Systems (FedRecs) have garnered increasing attention recently, thanks to their privacy-preserving benefits. However, the decentralized and open characteristics of current FedRecs present two dilemmas. First, the…

Information Retrieval · Computer Science 2024-04-01 Wei Yuan , Chaoqun Yang , Liang Qu , Guanhua Ye , Quoc Viet Hung Nguyen , Hongzhi Yin

Federated learning is a distributed framework designed to address privacy concerns. However, it introduces new attack surfaces, which are especially prone when data is non-Independently and Identically Distributed. Existing approaches fail…

Cryptography and Security · Computer Science 2025-05-27 Hyejun Jeong , Hamin Son , Seohu Lee , Jayun Hyun , Tai-Myoung Chung

Federated learning distributes model training among a multitude of agents, who, guided by privacy concerns, perform training using their local data but share only model parameter updates, for iterative aggregation at the server. In this…

Machine Learning · Computer Science 2019-11-26 Arjun Nitin Bhagoji , Supriyo Chakraborty , Prateek Mittal , Seraphin Calo

Federated recommendation is a prominent use case within federated learning, yet it remains susceptible to various attacks, from user to server-side vulnerabilities. Poisoning attacks are particularly notable among user-side attacks, as…

Cryptography and Security · Computer Science 2024-02-20 Ming Yin , Yichang Xu , Minghong Fang , Neil Zhenqiang Gong

Federated recommendation (FedRec) preserves user privacy by enabling decentralized training of personalized models, but this architecture is inherently vulnerable to adversarial attacks. Significant research has been conducted on targeted…

Information Retrieval · Computer Science 2025-07-03 Qitao Qin , Yucong Luo , Zhibo Chu

News recommendation is critical for personalized news distribution. Federated news recommendation enables collaborative model learning from many clients without sharing their raw data. It is promising for privacy-preserving news…

Information Retrieval · Computer Science 2023-06-09 Jingwei Yi , Fangzhao Wu , Bin Zhu , Jing Yao , Zhulin Tao , Guangzhong Sun , Xing Xie

The marriage of federated learning and recommender system (FedRec) has been widely used to address the growing data privacy concerns in personalized recommendation services. In FedRecs, users' attribute information and behavior data (i.e.,…

Information Retrieval · Computer Science 2023-01-31 Wei Yuan , Chaoqun Yang , Quoc Viet Hung Nguyen , Lizhen Cui , Tieke He , Hongzhi Yin

Extending recommender systems to federated learning (FL) frameworks to protect the privacy of users or platforms while making recommendations has recently gained widespread attention in academia. This is due to the natural coupling of…

Information Retrieval · Computer Science 2025-08-28 Yunqi Mi , Jiakui Shen , Guoshuai Zhao , Jialie Shen , Xueming Qian

Federated recommender systems (FedRec) have emerged as a promising approach to provide personalized recommendations while protecting user privacy. However, recent studies have shown their vulnerability to poisoning attacks, where malicious…

Cryptography and Security · Computer Science 2026-02-02 Bo Yan , Yurong Hao , Dingqi Liu , Huabin Sun , Pengpeng Qiao , Wei Yang Bryan Lim , Yang Cao , Chuan Shi

Federated recommender systems (FedRecs) have emerged as a popular research direction for protecting users' privacy in on-device recommendations. In FedRecs, users keep their data locally and only contribute their local collaborative…

Information Retrieval · Computer Science 2024-09-13 Chaoqun Yang , Wei Yuan , Liang Qu , Thanh Tam Nguyen

Due to the growing privacy concerns, decentralization emerges rapidly in personalized services, especially recommendation. Also, recent studies have shown that centralized models are vulnerable to poisoning attacks, compromising their…

Information Retrieval · Computer Science 2021-10-22 Shijie Zhang , Hongzhi Yin , Tong Chen , Zi Huang , Quoc Viet Hung Nguyen , Lizhen Cui

Federated recommendation (FedRec) preserves user privacy by enabling decentralized training of personalized models, but this architecture is inherently vulnerable to adversarial attacks. Significant research has been conducted on targeted…

Cryptography and Security · Computer Science 2024-12-31 Qitao Qin , Yucong Luo , Mingyue Cheng , Qingyang Mao , Chenyi Lei

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

Data poisoning has been proposed as a compelling defense against facial recognition models trained on Web-scraped pictures. Users can perturb images they post online, so that models will misclassify future (unperturbed) pictures. We…

Machine Learning · Computer Science 2022-03-15 Evani Radiya-Dixit , Sanghyun Hong , Nicholas Carlini , Florian Tramèr

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
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