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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

Federated Recommendation (FR) is a new learning paradigm to tackle the learn-to-rank problem in a privacy-preservation manner. How to integrate multi-modality features into federated recommendation is still an open challenge in terms of…

Information Retrieval · Computer Science 2026-03-02 Chunxu Zhang , Weipeng Zhang , Guodong Long , Zhiheng Xue , Riting Xia , Bo Yang

Reinforcement learning methods have been used to optimize long-term user engagement in recommendation systems. However, existing reinforcement learning-based recommendation systems do not fully exploit the relevance of individual user…

Information Retrieval · Computer Science 2025-04-29 Yongxin Deng , Xihe Qiu , Xiaoyu Tan , Yaochu Jin

This paper proposes a privacy-preserving distributed recommendation framework, Secure Distributed Collaborative Filtering (SDCF), to preserve the privacy of value, model and existence altogether. That says, not only the ratings from the…

Machine Learning · Computer Science 2017-11-23 Jia-Yun Jiang , Cheng-Te Li , Shou-De Lin

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

Over the past few years, federated learning has become widely used in various classical machine learning fields because of its collaborative ability to train data from multiple sources without compromising privacy. However, in the area of…

Machine Learning · Computer Science 2024-03-26 Hao Song , Jiacheng Yao , Zhengxi Li , Shaocong Xu , Shibo Jin , Jiajun Zhou , Chenbo Fu , Qi Xuan , Shanqing Yu

Federated Averaging remains the most widely used aggregation strategy in federated learning due to its simplicity and scalability. However, its performance degrades significantly in non-IID data settings, where client distributions are…

Machine Learning · Computer Science 2025-03-07 Marco Arazzi , Mert Cihangiroglu , Antonino Nocera

Sequential recommender systems have made significant progress. Recently, due to increasing concerns about user data privacy, some researchers have implemented federated learning for sequential recommendation, a.k.a., Federated Sequential…

Information Retrieval · Computer Science 2024-06-11 Wei Yuan , Chaoqun Yang , Liang Qu , Quoc Viet Hung Nguyen , Guanhua Ye , Hongzhi Yin

User-centric recommendation has become essential for delivering personalized services, as it enables systems to adapt to users' evolving behaviors while respecting their long-term preferences and privacy constraints. Although federated…

Information Retrieval · Computer Science 2026-03-19 Chunxu Zhang , Zhiheng Xue , Guodong Long , Weipeng Zhang , Bo Yang

Centralized recommender systems encounter privacy leakage due to the need to collect user behavior and other private data. Hence, federated recommender systems (FedRec) have become a promising approach with an aggregated global model on the…

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

Recently, federated learning (FL) has gained momentum because of its capability in preserving data privacy. To conduct model training by FL, multiple clients exchange model updates with a parameter server via Internet. To accelerate the…

Machine Learning · Computer Science 2024-02-07 Xiaoxin Su , Yipeng Zhou , Laizhong Cui , Song Guo

Federated learning has received great attention for its capability to train a large-scale model in a decentralized manner without needing to access user data directly. It helps protect the users' private data from centralized collecting.…

Machine Learning · Computer Science 2023-02-07 Guodong Long , Ming Xie , Tao Shen , Tianyi Zhou , Xianzhi Wang , Jing Jiang , Chengqi Zhang

Federated learning has made an important contribution to data privacy-preserving. Many previous works are based on the assumption that the data are independently identically distributed (IID). As a result, the model performance on…

Machine Learning · Computer Science 2020-09-17 Anxun He , Jianzong Wang , Zhangcheng Huang , Jing Xiao

Personalization in federated learning (FL) functions as a coordinator for clients with high variance in data or behavior. Ensuring the convergence of these clients' models relies on how closely users collaborate with those with similar…

Machine Learning · Computer Science 2023-02-24 Eunjeong Jeong , Marios Kountouris

Federated learning has recently emerged as a paradigm promising the benefits of harnessing rich data from diverse sources to train high quality models, with the salient features that training datasets never leave local devices. Only model…

Cryptography and Security · Computer Science 2022-02-07 Yifeng Zheng , Shangqi Lai , Yi Liu , Xingliang Yuan , Xun Yi , Cong Wang

Collaborative-learning-based recommender systems, such as those employing Federated Learning (FL) and Gossip Learning (GL), allow users to train models while keeping their history of liked items on their devices. While these methods were…

Information Retrieval · Computer Science 2025-04-16 Yacine Belal , Sonia Ben Mokhtar , Mohamed Maouche , Anthony Simonet-Boulogne

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

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

Machine learning algorithms operating on mobile networks can be characterized into three different categories. First is the classical situation in which the end-user devices send their data to a central server where this data is used to…

Machine Learning · Computer Science 2020-05-07 Semih Yagli , Alex Dytso , H. Vincent Poor

In this paper, we develop an algorithm for federated principal component analysis (PCA) with emphases on both communication efficiency and data privacy. Generally speaking, federated PCA algorithms based on direct adaptations of classic…

Optimization and Control · Mathematics 2024-10-29 Lei Wang , Xin Liu , Yin Zhang