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Stefan Werner

10 accepted papers

2024

On The Resilience Of Online Federated Learning To Model Poisoning Attacks Through Partial Sharing

ICASSP 2024accepted

We investigate the robustness of the recently introduced partialsharing online federated learning (PSO-Fed) algorithm against model-poisoning attacks. To this end, we analyze the performance of the PSO-Fed algorithm in the presence of Byzantine clients, who may clandestinely corrupt their local mode…

Cited by 0SourceScholar
2022

Communication-Efficient Online Federated Learning Framework for Nonlinear Regression

ICASSP 2022accepted

Federated learning (FL) literature typically assumes that each client has a fixed amount of data, which is unrealistic in many practical applications. Some recent works introduced a framework for online FL (Online-Fed) wherein clients perform model learning on streaming data and communicate the mode…

Cited by 0SourceScholar
2021

Kernel Regression on Graphs in Random Fourier Features Space

ICASSP 2021accepted

This work proposes an efficient batch-based implementation for kernel regression on graphs (KRG) using random Fourier features (RFF) and a low-complexity online implementation. Kernel regression has proven to be an efficient learning tool in the graph signal processing framework. However, it suffers…

Cited by 0SourceScholar
2019

Consensus-based Distributed Total Least-squares Estimation Using Parametric Semidefinite Programming

ICASSP 2019accepted

We propose a new distributed algorithm to solve the total least-squares (TLS) problem when data are distributed over a multi-agent network. To develop the proposed algorithm, named distributed ADMM TLS (DA-TLS), we reformulate the TLS problem as a parametric semidefinite program and solve it using t…

Cited by 0SourceScholar
2019

Price-aware Renewable Energy Management with Transmission Losses

ICASSP 2019accepted

In this paper we propose a genie-aided strategy to optimize the use of renewable energy (RE) in a community of households with shared access to storage and RE generation facilities. The households are spread over a limited geographical area, and are subject to different time-varying power consumptio…

Cited by 0SourceScholar
2015

Model-distributed solution of regularized least-squares problem over sensor networks

ICASSP 2015accepted

We develop a fully-distributed iterative algorithm for finding a model-distributed least-squares solution of systems of linear equations over sensor networks. Here, model-distributed means the solution vector is distributed across the network rather than being replicated at each node. For this purpo…

Cited by 0SourceScholar
2015

Subspace-based phase noise estimation in OFDM receivers

ICASSP 2015accepted

In this paper, we consider the problem of channel and phase noise estimation for an orthogonal frequency division multiplexing (OFDM) radio link. We solve this problem by first investigating the subspace in which the phase noise spectral vector lies and then exploiting this information during estima…

Cited by 0SourceScholar