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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

Calibrating machine learning models so that predicted probabilities better reflect the true outcome frequencies is crucial for reliable decision-making across many applications. In Federated Learning (FL), the goal is to train a global…

Machine Learning · Computer Science 2025-10-03 Samuel Maddock , Graham Cormode , Carsten Maple

Federated Learning (FL) is a distributed machine learning (ML) paradigm that enables multiple parties to jointly re-train a shared model without sharing their data with any other parties, offering advantages in both scale and privacy. We…

Machine Learning · Computer Science 2019-12-17 Daniel Peterson , Pallika Kanani , Virendra J. Marathe

Federated Learning (FL) with Low-Rank Adaptation (LoRA) has become a standard for privacy-preserving LLM fine-tuning. However, existing personalized methods predominantly operated under a restrictive Flat-Model Assumption: they addressed…

Machine Learning · Computer Science 2026-05-27 Jieming Bian , Lei Wang , Letian Zhang , Jie Xu

Model-heterogeneous personalized federated learning (MHPFL) enables FL clients to train structurally different personalized models on non-independent and identically distributed (non-IID) local data. Existing MHPFL methods focus on…

Machine Learning · Computer Science 2024-04-30 Liping Yi , Han Yu , Chao Ren , Heng Zhang , Gang Wang , Xiaoguang Liu , Xiaoxiao Li

Effectively leveraging private datasets remains a significant challenge in developing foundation models. Federated Learning (FL) has recently emerged as a collaborative framework that enables multiple users to fine-tune these models while…

Machine Learning · Computer Science 2025-10-27 Yiyuan Yang , Guodong Long , Qinghua Lu , Liming Zhu , Jing Jiang , Chengqi Zhang

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

Personalized decision-making can be implemented in a Federated learning (FL) framework that can collaboratively train a decision model by extracting knowledge across intelligent clients, e.g. smartphones or enterprises. FL can mitigate the…

Machine Learning · Computer Science 2023-02-01 Guodong Long , Ming Xie , Tao Shen , Tianyi Zhou , Xianzhi Wang , Jing Jiang , Chengqi Zhang

Data heterogeneity is one of the most challenging issues in federated learning, which motivates a variety of approaches to learn personalized models for participating clients. One such approach in deep neural networks based tasks is…

Machine Learning · Computer Science 2023-06-22 Jian Xu , Xinyi Tong , Shao-Lun Huang

This work tackles the challenges of data heterogeneity and communication limitations in decentralized federated learning. We focus on creating a collaboration graph that guides each client in selecting suitable collaborators for training…

Machine Learning · Computer Science 2024-06-11 Salma Kharrat , Marco Canini , Samuel Horvath

This paper focuses on addressing the practical yet challenging problem of model heterogeneity in federated learning, where clients possess models with different network structures. To track this problem, we propose a novel framework called…

Machine Learning · Computer Science 2023-10-30 Jiaqi Wang , Xingyi Yang , Suhan Cui , Liwei Che , Lingjuan Lyu , Dongkuan Xu , Fenglong Ma

Federated Learning (FL) enables collaborative optimization of machine learning models across decentralized data by aggregating model parameters. Our approach extends this concept by aggregating "knowledge" derived from models, instead of…

Machine Learning · Computer Science 2024-02-28 Abhishek Singh , Gauri Gupta , Ritvik Kapila , Yichuan Shi , Alex Dang , Sheshank Shankar , Mohammed Ehab , Ramesh Raskar

Recently, a large number of data sources opened up by informatization intensify the data heterogeneity, the faster speed of data generation and the gradual implementation of data regulations limit the storage time of data. In personalized…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-02-03 Sixing Tan , Xianmin Liu

Cross-silo Federated learning (FL) has become a promising tool in machine learning applications for healthcare. It allows hospitals/institutions to train models with sufficient data while the data is kept private. To make sure the FL model…

Machine Learning · Computer Science 2022-09-12 Aoxiao Zhong , Hao He , Zhaolin Ren , Na Li , Quanzheng Li

Federated learning (FL) for large language models (LLMs) has attracted increasing attention as a privacy-preserving approach for adapting models over distributed data, where parameter-efficient methods such as Low-Rank Adaptation (LoRA) are…

Machine Learning · Computer Science 2026-01-30 Zhikang Shen , Jianrong Lu , Haiyuan Wan , Jianhai Chen

Federated learning (FL) has emerged as a powerful approach to safeguard data privacy by training models across distributed edge devices without centralizing local data. Despite advancements in homogeneous data scenarios, maintaining…

Computer Vision and Pattern Recognition · Computer Science 2024-11-26 Yuting Ma , Shengeng Tang , Xiaohua Xu , Lechao Cheng

To support real-world decision-making, it is crucial for models to be well-calibrated, i.e., to assign reliable confidence estimates to their predictions. Uncertainty quantification is particularly important in personalized federated…

Machine Learning · Computer Science 2024-10-21 Boning Zhang , Dongzhu Liu , Osvaldo Simeone , Guanchu Wang , Dimitrios Pezaros , Guangxu Zhu

Knowledge sharing and model personalization are two key components in the conceptual framework of personalized federated learning (PFL). Existing PFL methods focus on proposing new model personalization mechanisms while simply implementing…

Machine Learning · Computer Science 2022-05-03 Fengwen Chen , Guodong Long , Zonghan Wu , Tianyi Zhou , Jing Jiang

Federated learning (FL) is a paradigm where many clients collaboratively train a model under the coordination of a central server, while keeping the training data locally stored. However, heterogeneous data distributions over different…

Machine Learning · Computer Science 2022-05-27 Yaqi Sun , Shijing Si , Jianzong Wang , Yuhan Dong , Zhitao Zhu , Jing Xiao

Personalized Federated Learning (PFL) aims to address the statistical heterogeneity of data across clients by learning the personalized model for each client. Among various PFL approaches, the personalized aggregation-based approach…

Machine Learning · Computer Science 2025-10-09 Jiarui Song , Yunheng Shen , Chengbin Hou , Pengyu Wang , Jinbao Wang , Ke Tang , Hairong Lv