Search Results for author: Johan Östman

Found 6 papers, 1 papers with code

Secure Aggregation is Not Private Against Membership Inference Attacks

no code implementations26 Mar 2024 Khac-Hoang Ngo, Johan Östman, Giuseppe Durisi, Alexandre Graell i Amat

In this paper, we delve into the privacy implications of SecAgg by treating it as a local differential privacy (LDP) mechanism for each local update.

Federated Learning Privacy Preserving

FedStruct: Federated Decoupled Learning over Interconnected Graphs

no code implementations29 Feb 2024 Javad Aliakbari, Johan Östman, Alexandre Graell i Amat

We address the challenge of federated learning on graph-structured data distributed across multiple clients.

Federated Learning Node Classification

FedGT: Identification of Malicious Clients in Federated Learning with Secure Aggregation

no code implementations9 May 2023 Marvin Xhemrishi, Johan Östman, Antonia Wachter-Zeh, Alexandre Graell i Amat

Inspired by group testing, the framework leverages overlapping groups of clients to identify the presence of malicious clients in the groups via a decoding operation.

Data Poisoning Federated Learning

Decentralised Semi-supervised Onboard Learning for Scene Classification in Low-Earth Orbit

no code implementations6 May 2023 Johan Östman, Pablo Gomez, Vinutha Magal Shreenath, Gabriele Meoni

Onboard machine learning on the latest satellite hardware offers the potential for significant savings in communication and operational costs.

Federated Learning Scene Classification

Efficient Node Selection in Private Personalized Decentralized Learning

1 code implementation30 Jan 2023 Edvin Listo Zec, Johan Östman, Olof Mogren, Daniel Gillblad

Personalized decentralized learning is a promising paradigm for distributed learning, enabling each node to train a local model on its own data and collaborate with other nodes to improve without sharing any data.

Privacy Preserving

Decentralized Online Bandit Optimization on Directed Graphs with Regret Bounds

no code implementations27 Jan 2023 Johan Östman, Ather Gattami, Daniel Gillblad

We consider a decentralized multiplayer game, played over $T$ rounds, with a leader-follower hierarchy described by a directed acyclic graph.

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