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Vanilla federated learning does not support learning in an online environment, learning a personalized model on each client, and learning in a decentralized setting. There are existing methods extending federated learning in each of the…

Machine Learning · Computer Science 2023-11-09 Renzhi Wu , Saayan Mitra , Xiang Chen , Anup Rao

Personalized federated learning (pFL) aims to adapt models to client specific data distributions, yet it often fails to reliably preserve personalized information. Local training is hindered by high variance gradients induced by limited and…

Machine Learning · Computer Science 2026-05-05 Dongwon Kim , Gyuejeong Lee

Federated learning enables collaborative model training without sharing raw data, but data heterogeneity consistently challenges the performance of the global model. Traditional optimization methods often rely on collaborative global model…

Machine Learning · Computer Science 2025-09-29 Weiqi Yue , Wenbiao Li , Yuzhou Jiang , Anisa Halimi , Roger French , Erman Ayday

One of the main challenges of federated learning (FL) is handling non-independent and identically distributed (non-IID) client data, which may occur in practice due to unbalanced datasets and use of different data sources across clients.…

Machine Learning · Computer Science 2024-10-23 Peng Wu , Tales Imbiriba , Pau Closas

Federated learning is a collaborative model training method that iterates model updates by multiple clients and aggregation of the updates by a central server. Device and statistical heterogeneity of participating clients cause significant…

Machine Learning · Computer Science 2023-08-29 Ayano Nakai-Kasai , Tadashi Wadayama

Federated Learning (FL) has evolved as a promising technique to handle distributed machine learning across edge devices. A single neural network (NN) that optimises a global objective is generally learned in most work in FL, which could be…

Information Theory · Computer Science 2022-03-10 Sawan Singh Mahara , Shruti M. , B. N. Bharath , Akash Murthy

Federated Learning (FL) offers a decentralized approach to model training, where data remains local and only model parameters are shared between the clients and the central server. Traditional methods, such as Federated Averaging (FedAvg),…

Machine Learning · Computer Science 2025-02-12 Jiahao Lai , Jiaqi Li , Jian Xu , Yanru Wu , Boshi Tang , Siqi Chen , Yongfeng Huang , Wenbo Ding , Yang Li

The key challenge of personalized federated learning (PerFL) is to capture the statistical heterogeneity properties of data with inexpensive communications and gain customized performance for participating devices. To address these, we…

Machine Learning · Computer Science 2024-07-22 Sourasekhar Banerjee , Ali Dadras , Alp Yurtsever , Monowar Bhuyan

In this paper, we propose an Expectation-Maximization-based (EM) Personalized Federated Learning (PFL) framework for multi-objective optimization (MOO) in Integrated Sensing and Communication (ISAC) systems. In contrast to standard…

Signal Processing · Electrical Eng. & Systems 2025-10-09 Zhou Ni , Sravan Reddy Chintareddy , Peiyuan Guan , Morteza Hashemi

Federated recommendation systems employ federated learning techniques to safeguard user privacy by transmitting model parameters instead of raw user data between user devices and the central server. Nevertheless, the current federated…

Information Retrieval · Computer Science 2023-05-12 Sichun Luo , Yuanzhang Xiao , Xinyi Zhang , Yang Liu , Wenbo Ding , Linqi Song

Federated Learning (FL) is a distributed learning paradigm where clients collaboratively train a model while keeping their own data private. With an increasing scale of clients and models, FL encounters two key challenges, client drift due…

Machine Learning · Computer Science 2025-01-20 Jianhui Sun , Xidong Wu , Heng Huang , Aidong Zhang

Federated learning (FL) offers a privacy-preserving framework for distributed machine learning, enabling collaborative model training across diverse clients without centralizing sensitive data. However, statistical heterogeneity,…

Machine Learning · Statistics 2025-04-08 Hengrui Hu , Anai N. Kothari , Anjishnu Banerjee

Federated learning has evolved to improve a single global model under data heterogeneity (as a curse) or to develop multiple personalized models using data heterogeneity (as a blessing). However, little research has considered both…

Machine Learning · Computer Science 2022-03-17 Jaehoon Oh , Sangmook Kim , Se-Young Yun

Federated Learning aims at training a global model from multiple decentralized devices (i.e. clients) without exchanging their private local data. A key challenge is the handling of non-i.i.d. (independent identically distributed) data…

Machine Learning · Computer Science 2022-07-20 Xin Dong , Sai Qian Zhang , Ang Li , H. T. Kung

Personalized Federated Learning (pFL) holds immense promise for tailoring machine learning models to individual users while preserving data privacy. However, achieving optimal performance in pFL often requires a careful balancing act…

Machine Learning · Computer Science 2024-09-12 Azal Ahmad Khan , Ahmad Faraz Khan , Haider Ali , Ali Anwar

Federated learning is a distributed machine learning paradigm designed to protect data privacy. However, data heterogeneity across various clients results in catastrophic forgetting, where the model rapidly forgets previous knowledge while…

Machine Learning · Computer Science 2024-11-07 Pengju Wang , Bochao Liu , Weijia Guo , Yong Li , Shiming Ge

Federated learning (FL) enables multiple clients with distributed data sources to collaboratively train a shared model without compromising data privacy. However, existing FL paradigms face challenges due to heterogeneity in client data…

Machine Learning · Computer Science 2024-10-21 Brianna Mueller , W. Nick Street , Stephen Baek , Qihang Lin , Jingyi Yang , Yankun Huang

Traditional Federated Learning (FL) approaches often struggle with data heterogeneity across clients, leading to suboptimal model performance for individual clients. To address this issue, Personalized Federated Learning (PFL) emerges as a…

Machine Learning · Computer Science 2025-01-20 Zhou Ni , Masoud Ghazikor , Morteza Hashemi

Federated learning (FL) is an appealing paradigm that allows a group of machines (a.k.a. clients) to learn collectively while keeping their data local. However, due to the heterogeneity between the clients' data distributions, the model…

Machine Learning · Computer Science 2024-10-01 Youssef Allouah , Abdellah El Mrini , Rachid Guerraoui , Nirupam Gupta , Rafael Pinot

In practical scenarios, federated learning frequently necessitates training personalized models for each client using heterogeneous data. This paper proposes a backbone self-distillation approach to facilitate personalized federated…

Machine Learning · Computer Science 2024-09-25 Pengju Wang , Bochao Liu , Dan Zeng , Chenggang Yan , Shiming Ge