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Federated Learning on Non-IID Data: A Survey - 2021

Federated Learning On Non-Iid Data: A Survey

Research Area:  Machine Learning


Federated learning is an emerging distributed machine learning framework for privacy preservation. However, models trained in federated learning usually have worse performance than those trained in the standard centralized learning mode, especially when the training data are not independent and identically distributed (Non-IID) on the local devices. In this survey, we pro-vide a detailed analysis of the influence of Non-IID data on both parametric and non-parametric machine learning models in both horizontal and vertical federated learning. In addition, cur-rent research work on handling challenges of Non-IID data in federated learning are reviewed, and both advantages and disadvantages of these approaches are discussed. Finally, we suggest several future research directions before concluding the paper.


Author(s) Name:  Hangyu Zhu, Jinjin Xu, Shiqing Liu, Yaochu Jin

Journal name:  Neurocomputing

Conferrence name:  

Publisher name:  Elsevier

DOI:  10.1016/j.neucom.2021.07.098

Volume Information:  Volume 465, 20 November 2021, Pages 371-390