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When implementing hierarchical federated learning over wireless networks, scalability assurance and the ability to handle both interference and device data heterogeneity are crucial. This work introduces a new two-level learning method…

Information Theory · Computer Science 2024-01-12 Seyed Mohammad Azimi-Abarghouyi , Viktoria Fodor

The recent development of scalable Bayesian inference methods has renewed interest in the adoption of Bayesian learning as an alternative to conventional frequentist learning that offers improved model calibration via uncertainty…

Information Theory · Computer Science 2023-08-01 Boning Zhang , Dongzhu Liu , Osvaldo Simeone , Guangxu Zhu

In order to meet the extremely heterogeneous requirements of the next generation wireless communication networks, research community is increasingly dependent on using machine learning solutions for real-time decision-making and radio…

Signal Processing · Electrical Eng. & Systems 2022-01-11 Debaditya Shome , Omer Waqar , Wali Ullah Khan

Federated learning (FL) is capable of performing large distributed machine learning tasks across multiple edge users by periodically aggregating trained local parameters. To address key challenges of enabling FL over a wireless fog-cloud…

Machine Learning · Computer Science 2024-10-28 Van-Dinh Nguyen , Symeon Chatzinotas , Bjorn Ottersten , Trung Q. Duong

Over-the-air computation (AirComp) has recently emerged as a pivotal technique for communication-efficient federated learning (FL) in resource-constrained wireless networks. Though AirComp leverages the superposition property of multiple…

Information Theory · Computer Science 2025-03-25 Jiacheng Yao , Wei Xu , Guangxu Zhu , Zhaohui Yang , Kaibin Huang , Dusit Niyato

Federated learning (FL) is a widely used and impactful distributed optimization framework that achieves consensus through averaging locally trained models. While effective, this approach may not align well with Bayesian inference, where the…

Machine Learning · Computer Science 2025-10-01 Nour Jamoussi , Giuseppe Serra , Photios A. Stavrou , Marios Kountouris

Conventional frequentist FL schemes are known to yield overconfident decisions. Bayesian FL addresses this issue by allowing agents to process and exchange uncertainty information encoded in distributions over the model parameters. However,…

Machine Learning · Computer Science 2022-09-20 Jinu Gong , Osvaldo Simeone , Joonhyuk Kang

Vertical federated learning (FL) is a collaborative machine learning framework that enables devices to learn a global model from the feature-partition datasets without sharing local raw data. However, as the number of the local intermediate…

Information Theory · Computer Science 2023-05-11 Yuanming Shi , Shuhao Xia , Yong Zhou , Yijie Mao , Chunxiao Jiang , Meixia Tao

Over-the-air computation (AirComp) has emerged as a new analog power-domain non-orthogonal multiple access (NOMA) technique for low-latency model/gradient-updates aggregation in federated edge learning (FEEL). By integrating communication…

Information Theory · Computer Science 2021-11-12 Xiaowen Cao , Guangxu Zhu , Jie Xu , Shuguang Cui

One of the key challenges towards the deployment of over-the-air federated learning (AirFL) is the design of mechanisms that can comply with the power and bandwidth constraints of the shared channel, while causing minimum deterioration to…

Information Theory · Computer Science 2023-05-19 Haifeng Wen , Hong Xing , Osvaldo Simeone

Mass data traffics, low-latency wireless services and advanced artificial intelligence (AI) technologies have driven the emergence of a new paradigm for wireless networks, namely edge-intelligent networks, which are more efficient and…

Information Theory · Computer Science 2022-05-17 Qiao Qi , Xiaoming Chen

Federated learning (FL) as a promising edge-learning framework can effectively address the latency and privacy issues by featuring distributed learning at the devices and model aggregation in the central server. In order to enable efficient…

Information Theory · Computer Science 2022-07-12 Chunmei Xu , Shengheng Liu , Zhaohui Yang , Yongming Huang , Kai-Kit Wong

Over-the-air computation (AirComp) has emerged as a promising technology that enables simultaneous transmission and computation through wireless channels. In this paper, we investigate the networked AirComp in multiple clusters allowing…

Signal Processing · Electrical Eng. & Systems 2025-05-19 Xiao Tang , Huirong Xiao , Chao Shen , Li Sun , Qinghe Du , Dusit Niyato , Zhu Han

In this paper, the problem of delay minimization for federated learning (FL) over wireless communication networks is investigated. In the considered model, each user exploits limited local computational resources to train a local FL model…

Signal Processing · Electrical Eng. & Systems 2020-07-08 Zhaohui Yang , Mingzhe Chen , Walid Saad , Choong Seon Hong , Mohammad Shikh-Bahaei , H. Vincent Poor , Shuguang Cui

The data heterogeneity across devices and the limited communication resources, e.g., bandwidth and energy, are two of the main bottlenecks for wireless federated learning (FL). To tackle these challenges, we first devise a novel FL…

Machine Learning · Computer Science 2023-02-21 Zhixiong Chen , Wenqiang Yi , Arumugam Nallanathan , Geoffrey Ye Li

Conventional federated learning (FL) frameworks often suffer from training degradation due to data uncertainty and heterogeneity across local clients. Probabilistic approaches such as Bayesian neural networks (BNNs) can mitigate this issue…

Machine Learning · Computer Science 2026-03-20 Ratun Rahman , Dinh C. Nguyen

Bayesian Federated Learning (FL) has been recently introduced to provide well-calibrated Machine Learning (ML) models quantifying the uncertainty of their predictions. Despite their advantages compared to frequentist FL setups, Bayesian FL…

Machine Learning · Computer Science 2024-05-12 Luca Barbieri , Stefano Savazzi , Monica Nicoli

Federated learning (FL) is an attractive paradigm for making use of rich distributed data while protecting data privacy. Nonetheless, nonideal communication links and limited transmission resources may hinder the implementation of fast and…

Machine Learning · Computer Science 2022-02-11 Xin Fan , Yue Wang , Yan Huo , Zhi Tian

We consider a broadband over-the-air computation empowered model aggregation approach for wireless federated learning (FL) systems and propose to leverage an intelligent reflecting surface (IRS) to combat wireless fading and noise. We first…

Information Theory · Computer Science 2023-10-12 Deyou Zhang , Ming Xiao , Zhibo Pang , Lihui Wang , H. Vincent Poor

In this paper, the problem of training federated learning (FL) algorithms over a realistic wireless network is studied. In particular, in the considered model, wireless users execute an FL algorithm while training their local FL models…

Networking and Internet Architecture · Computer Science 2022-02-01 Mingzhe Chen , Zhaohui Yang , Walid Saad , Changchuan Yin , H. Vincent Poor , Shuguang Cui