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Data heterogeneity poses a fundamental challenge in federated learning (FL), especially when clients differ not only in distribution but also in the reliability of their predictions across individual examples. While personalized FL (PFL)…

Machine Learning · Computer Science 2025-09-29 Amr Abourayya , Jens Kleesiek , Bharat Rao , Michael Kamp

Federated learning (FL) is a distributed paradigm that coordinates massive local clients to collaboratively train a global model via stage-wise local training processes on the heterogeneous dataset. Previous works have implicitly studied…

Machine Learning · Computer Science 2026-04-15 Li Shen , Yan Sun , Dacheng Tao

We consider a federated learning (FL) system consisting of multiple clients and a server, where the clients aim to collaboratively learn a common decision model from their distributed data. Unlike the conventional FL framework that assumes…

Machine Learning · Computer Science 2023-05-10 Kun Jin , Tongxin Yin , Zhongzhu Chen , Zeyu Sun , Xueru Zhang , Yang Liu , Mingyan Liu

Heterogeneous Federated Learning (HFL) has gained significant attention for its capacity to handle both model and data heterogeneity across clients. Prototype-based HFL methods emerge as a promising solution to address statistical and model…

Machine Learning · Computer Science 2025-12-22 Fatema Siddika , Md Anwar Hossen , Wensheng Zhang , Anuj Sharma , Juan Pablo Muñoz , Ali Jannesari

Lately, Personalized Federated Learning (PFL) has emerged as a prevalent paradigm to deliver personalized models by collaboratively training while simultaneously adapting to each client's local applications. Existing PFL methods typically…

Federated Learning (FL) faces challenges from client data heterogeneity and resource-constrained mobile devices, which can degrade model accuracy. Personalized Federated Learning (PFL) addresses this issue by adapting shared global…

Machine Learning · Computer Science 2026-04-21 Xingyan Chen , Tian Du , Changqiao Xu , Fuzhen Zhuang , Lujie Zhong , Gabriel-Miro Muntean , Enmao Diao

Standard federated optimization methods successfully apply to stochastic problems with single-level structure. However, many contemporary ML problems -- including adversarial robustness, hyperparameter tuning, and actor-critic -- fall under…

Machine Learning · Computer Science 2022-09-15 Davoud Ataee Tarzanagh , Mingchen Li , Christos Thrampoulidis , Samet Oymak

Federated Learning (FL) algorithms implicitly assume that clients passively comply with server-side orchestration by sharing local model updates upon server request. However, this overlooks an important aspect in real-world cross-silo…

Machine Learning · Computer Science 2026-05-19 M Yashwanth , Arunabh Singh , Ashok Nayak , Sai Kiran Bulusu , Anirban Chakraborty

Federated learning, conducive to solving data privacy and security problems, has attracted increasing attention recently. However, the existing federated boosting model sequentially builds a decision tree model with the weak base learner,…

Machine Learning · Computer Science 2022-04-05 Yujin Han , Pan Du , Kai Yang

Federated Learning (FL) has become an active and promising distributed machine learning paradigm. As a result of statistical heterogeneity, recent studies clearly show that the performance of popular FL methods (e.g., FedAvg) deteriorates…

Machine Learning · Computer Science 2021-06-24 Hua Huang , Fanhua Shang , Yuanyuan Liu , Hongying Liu

Federated Learning (FL) empowers multiple clients to collaboratively train machine learning models without sharing local data, making it highly applicable in heterogeneous Internet of Things (IoT) environments. However, intrinsic…

Machine Learning · Computer Science 2025-01-29 Xi Chen , Qin Li , Haibin Cai , Ting Wang

We propose a novel framework to study asynchronous federated learning optimization with delays in gradient updates. Our theoretical framework extends the standard FedAvg aggregation scheme by introducing stochastic aggregation weights to…

Machine Learning · Computer Science 2022-06-22 Yann Fraboni , Richard Vidal , Laetitia Kameni , Marco Lorenzi

Federated Learning (FL) is a distributed machine learning approach to learn models on decentralized heterogeneous data, without the need for clients to share their data. Many existing FL approaches assume that all clients have equal…

Machine Learning · Computer Science 2023-10-10 Aditya Narayan Ravi , Ilan Shomorony

Federated learning (FL) offers privacy-preserving decentralized machine learning, optimizing models at edge clients without sharing private data. Simultaneously, foundation models (FMs) have gained traction in the artificial intelligence…

Machine Learning · Computer Science 2023-10-06 Sixing Yu , J. Pablo Muñoz , Ali Jannesari

Large machine learning models trained on diverse data have recently seen unprecedented success. Federated learning enables training on private data that may otherwise be inaccessible, such as domain-specific datasets decentralized across…

Personalized Federated Learning (PFL) aims to train customized models for clients with highly heterogeneous data distributions while preserving data privacy. Existing approaches often rely on heuristics like clustering or model…

Artificial Intelligence · Computer Science 2026-03-13 Ping Guo , Tiantian Zhang , Xi Lin , Xiang Li , Zhi-Ri Tang , Qingfu Zhang

In Federated Learning (FL), a number of clients or devices collaborate to train a model without sharing their data. Models are optimized locally at each client and further communicated to a central hub for aggregation. While FL is an…

Machine Learning · Computer Science 2023-07-25 Farshid Varno , Marzie Saghayi , Laya Rafiee Sevyeri , Sharut Gupta , Stan Matwin , Mohammad Havaei

Federated Learning (FL) facilitates the fine-tuning of Foundation Models (FMs) using distributed data sources, with Low-Rank Adaptation (LoRA) gaining popularity due to its low communication costs and strong performance. While recent work…

Machine Learning · Computer Science 2025-05-27 Zihao Peng , Jiandian Zeng , Boyuan Li , Guo Li , Shengbo Chen , Tian Wang

Traditional Federated Learning (FL) faces significant challenges in terms of efficiency and accuracy, particularly in heterogeneous environments where clients employ diverse model architectures and have varying computational resources. Such…

Machine Learning · Computer Science 2025-05-13 Jiacheng Wang , Hongtao Lv , Lei Liu

Federated learning (FL) has emerged as a prominent approach for collaborative training of machine learning models across distributed clients while preserving data privacy. However, the quest to balance acceleration and stability becomes a…

Machine Learning · Computer Science 2024-05-21 Liuzhi Zhou , Yu He , Kun Zhai , Xiang Liu , Sen Liu , Xingjun Ma , Guangnan Ye , Yu-Gang Jiang , Hongfeng Chai