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Models trained in federated settings often suffer from degraded performances and fail at generalizing, especially when facing heterogeneous scenarios. In this work, we investigate such behavior through the lens of geometry of the loss and…

机器学习 · 计算机科学 2022-07-22 Debora Caldarola , Barbara Caputo , Marco Ciccone

In this work, we present a federated version of the state-of-the-art Neural Collaborative Filtering (NCF) approach for item recommendations. The system, named FedNCF, enables learning without requiring users to disclose or transmit their…

信息检索 · 计算机科学 2022-02-17 Vasileios Perifanis , Pavlos S. Efraimidis

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…

机器学习 · 计算机科学 2023-11-01 Lin Wang , Zhichao Wang , Xi Leng , Xiaoying Tang

Federated recommender systems (FedRS) have emerged as a paradigm for protecting user privacy by keeping interaction data on local devices while coordinating model training through a central server. However, most existing federated…

信息检索 · 计算机科学 2026-03-13 Liang Qu , Jianxin Li , Wei Yuan , Shangfei Zheng , Lu Chen , Chengfei Liu , Hongzhi Yin

Chemistry research has both high material and computational costs to conduct experiments. Institutions thus consider chemical data to be valuable and there have been few efforts to construct large public datasets for machine learning.…

机器学习 · 计算机科学 2022-05-10 Wei Zhu , Jiebo Luo , Andrew White

We focus on the problem of Personalized Federated Continual Learning (PFCL): a group of distributed clients, each with a sequence of local tasks on arbitrary data distributions, collaborate through a central server to train a personalized…

机器学习 · 计算机科学 2024-04-22 Jin Xie , Chenqing Zhu , Songze Li

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…

信息检索 · 计算机科学 2023-12-29 Qi Hu , Yangqiu Song

Federated learning (FL) enables collaborative training across clients while preserving privacy. While most existing FL methods assume homogeneous model architectures, client heterogeneity in both data and resources makes this assumption…

机器学习 · 计算机科学 2026-03-30 Yuan Yao , Lixu Wang , Jiaqi Wu , Jin Song , Simin Chen , Zehua Wang , Zijian Tian , Wei Chen , Huixia Li , Xiaoxiao Li

Edge computing allows artificial intelligence and machine learning models to be deployed on edge devices, where they can learn from local data and collaborate to form a global model. Federated learning (FL) is a distributed machine learning…

机器学习 · 计算机科学 2024-05-03 Chris Xing Tian , Yibing Liu , Haoliang Li , Ray C. C. Cheung , Shiqi Wang

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…

信息检索 · 计算机科学 2025-04-29 Yongxin Deng , Xihe Qiu , Xiaoyu Tan , Yaochu Jin

Generative recommendation systems have gained increasing attention as an innovative approach that directly generates item identifiers for recommendation tasks. Despite their potential, a major challenge is the effective construction of item…

信息检索 · 计算机科学 2025-06-05 Enze Liu , Bowen Zheng , Cheng Ling , Lantao Hu , Han Li , Wayne Xin Zhao

As privacy protection gains increasing importance, more models are being trained on edge devices and subsequently merged into the central server through Federated Learning (FL). However, current research overlooks the impact of network…

机器学习 · 计算机科学 2025-08-04 Hangyu Li , Hongyue Wu , Guodong Fan , Zhen Zhang , Shizhan Chen , Zhiyong Feng

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…

密码学与安全 · 计算机科学 2024-01-24 Dezhong Yao , Tongtong Liu , Qi Cao , Hai Jin

Personalized federated recommendation system (FedRec) has gained significant attention for its ability to preserve privacy in delivering tailored recommendations. To alleviate the statistical heterogeneity challenges among clients and…

信息检索 · 计算机科学 2025-09-30 Yunqi Mi , Boyang Yan , Guoshuai Zhao , Jialie Shen , Xueming Qian

Federated learning is a method of training models on private data distributed over multiple devices. To keep device data private, the global model is trained by only communicating parameters and updates which poses scalability challenges…

In recent years, recommender systems have advanced rapidly, where embedding learning for users and items plays a critical role. A standard method learns a unique embedding vector for each user and item. However, such a method has two…

人工智能 · 计算机科学 2023-02-13 Yizhou Chen , Guangda Huzhang , Anxiang Zeng , Qingtao Yu , Hui Sun , Heng-yi Li , Jingyi Li , Yabo Ni , Han Yu , Zhiming Zhou

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…

信息检索 · 计算机科学 2021-01-21 Vito Walter Anelli , Yashar Deldjoo , Tommaso Di Noia , Antonio Ferrara , Fedelucio Narducci

Federated learning (FL) is an emerging paradigm for decentralized training of machine learning models on distributed clients, without revealing the data to the central server. The learning scheme may be horizontal, vertical or hybrid (both…

机器学习 · 计算机科学 2024-01-11 Fanfei Meng , Lele Zhang , Yu Chen , Yuxin Wang

The purpose of federated learning is to enable multiple clients to jointly train a machine learning model without sharing data. However, the existing methods for training an image segmentation model have been based on an unrealistic…

计算机视觉与模式识别 · 计算机科学 2022-05-05 Jeffry Wicaksana , Zengqiang Yan , Dong Zhang , Xijie Huang , Huimin Wu , Xin Yang , Kwang-Ting Cheng

Federated learning (FL) enables a set of client devices to collaboratively train a model without sharing raw data. This process, though, operates under the constrained computation and communication resources of edge devices. These…