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Sparse Incremental Aggregation in Satellite Federated Learning

2025-01-20 · Nasrin Razmi, Sourav Mukherjee, Bho Matthiesen, Armin Dekorsy, Petar Popovski

This paper studies Federated Learning (FL) in low Earth orbit (LEO) satellite constellations, where satellites are connected via intra-orbit inter-satellite links (ISLs) to their neighboring satellites. During the FL training process, satellites in each orbit forward gradients from nearby satellites, which are eventually transferred to the parameter server (PS). To enhance the efficiency of the FL training process, satellites apply in-network aggregation, referred to as incremental aggregation. In this work, the gradient sparsification methods from [1] are applied to satellite scenarios to improve bandwidth efficiency during incremental aggregation. The numerical results highlight an increase of over 4 x in bandwidth efficiency as the number of satellites in the orbital plane increases.

📄 PDF Abstract BibTeX arXiv:2501.11385

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Federated Learning

Methods 이 논문이 사용한 방법론

Gradient Sparsification Gradient Sparsification is a technique for distributed training that sparsifies stochastic gradients to reduce the communication cost, with minor increase in the number of…

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