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Federated Learning (FL) is gaining prominence in machine learning as privacy concerns grow. This paradigm allows each client (e.g., an individual online store) to train a recommendation model locally while sharing only model updates,…

Machine Learning · Computer Science 2025-10-09 Jongwon Park , Minku Kang , Wooseok Sim , Soyoung Lee , Hogun Park

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

In recent years, recommender systems are crucially important for the delivery of personalized services that satisfy users' preferences. With personalized recommendation services, users can enjoy a variety of recommendations such as movies,…

Information Retrieval · Computer Science 2023-03-21 Shijie Zhang , Wei Yuan , Hongzhi Yin

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

Federated recommendations leverage the federated learning (FL) techniques to make privacy-preserving recommendations. Though recent success in the federated recommender system, several vital challenges remain to be addressed: (i) The…

Information Retrieval · Computer Science 2022-08-25 Sichun Luo , Yuanzhang Xiao , Yang Liu , Congduan Li , Linqi Song

Federated recommendation applies federated learning techniques in recommendation systems to help protect user privacy by exchanging models instead of raw user data between user devices and the central server. Due to the heterogeneity in…

Information Retrieval · Computer Science 2022-08-22 Sichun Luo , Yuanzhang Xiao , Linqi Song

The state-of-the-art face recognition systems are typically trained on a single computer, utilizing extensive image datasets collected from various number of users. However, these datasets often contain sensitive personal information that…

Computer Vision and Pattern Recognition · Computer Science 2024-03-11 Enoch Solomon , Abraham Woubie

Matrix Factorization has been very successful in practical recommendation applications and e-commerce. Due to data shortage and stringent regulations, it can be hard to collect sufficient data to build performant recommender systems for a…

Cryptography and Security · Computer Science 2020-07-06 Dashan Gao , Ben Tan , Ce Ju , Vincent W. Zheng , Qiang Yang

Federated Learning (FL) has emerged as a promising approach for preserving data privacy in recommendation systems by training models locally. Recently, Graph Neural Networks (GNN) have gained popularity in recommendation tasks due to their…

Cryptography and Security · Computer Science 2024-01-24 Dezhong Yao , Tongtong Liu , Qi Cao , Hai Jin

Federated learning enables distributed clients to collaborate on training while storing their data locally to protect client privacy. However, due to the heterogeneity of data, models, and devices, the final global model may need to perform…

Machine Learning · Computer Science 2024-06-25 Wolong Xing , Zhenkui Shi , Hongyan Peng , Xiantao Hu , Xianxian Li

Personalization stands as the cornerstone of recommender systems (RecSys), striving to sift out redundant information and offer tailor-made services for users. However, the conventional cloud-based RecSys necessitates centralized data…

Information Retrieval · Computer Science 2024-12-12 Jing Jiang , Chunxu Zhang , Honglei Zhang , Zhiwei Li , Yidong Li , Bo Yang

In Machine Learning scenarios, privacy is a crucial concern when models have to be trained with private data coming from users of a service, such as a recommender system, a location-based mobile service, a mobile phone text messaging…

Machine Learning · Computer Science 2020-07-20 Vito Walter Anelli , Yashar Deldjoo , Tommaso Di Noia , Antonio Ferrara

Recommender systems are commonly trained on centrally collected user interaction data like views or clicks. This practice however raises serious privacy concerns regarding the recommender's collection and handling of potentially sensitive…

Machine Learning · Computer Science 2021-07-29 Lorenzo Minto , Moritz Haller , Hamed Haddadi , Benjamin Livshits

Federated recommendation systems (FedRecs) have gained significant attention for providing privacy-preserving recommendation services. However, existing FedRecs assume that all users have the same requirements for privacy protection, i.e.,…

Machine Learning · Computer Science 2025-08-11 Ce Na , Kai Yang , Dengzhao Fang , Yu Li , Jingtong Gao , Chengcheng Zhu , Jiale Zhang , Xiaobing Sun , Yi Chang

Fuzzy systems are a way to allow machines, systems and frameworks to deal with uncertainty, which is not possible in binary systems that most computers use. These systems have already been deployed for certain use cases, and fuzzy systems…

Machine Learning · Computer Science 2025-07-10 Arthur Alexander Lim , Zhen Bin It , Jovan Bowen Heng , Tee Hui Teo

Federated learning is emerging as a machine learning technique that trains a model across multiple decentralized parties. It is renowned for preserving privacy as the data never leaves the computational devices, and recent approaches…

Machine Learning · Computer Science 2021-06-25 Yuchen Li , Yifan Bao , Liyao Xiang , Junhan Liu , Cen Chen , Li Wang , Xinbing Wang

Privacy-preserving recommendations are recently gaining momentum, since the decentralized user data is increasingly harder to collect, by recommendation service providers, due to the serious concerns over user privacy and data security.…

Information Retrieval · Computer Science 2020-08-26 Mingkai Huang , Hao Li , Bing Bai , Chang Wang , Kun Bai , Fei Wang

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

With the development of laws and regulations related to privacy preservation, it has become difficult to collect personal data to perform machine learning. In this context, federated learning, which is distributed learning without sharing…

Computer Vision and Pattern Recognition · Computer Science 2024-05-08 Yosuke Kaga , Yusei Suzuki , Kenta Takahashi

In order to provide high-quality recommendations for users, it is desirable to share and integrate multiple datasets held by different parties. However, when sharing such distributed datasets, we need to protect personal and confidential…

Information Retrieval · Computer Science 2024-06-05 Tomoya Yanagi , Shunnosuke Ikeda , Noriyoshi Sukegawa , Yuichi Takano