---
title: "Class-Grouped Normalized Momentum and Faster Hyperparameter Exploration to Tackle Class Imbalance in Federated Learning — Stuff That Spins"
description: "arXiv:2607.01474v1 Announce Type: new Abstract: Class imbalance poses a critical challenge in federated learning (FL), where underrepresented classes suffer from poor predictive performance yet cannot be addressed by standard centralized techniques due to privacy and heterogeneity constraints. We p…"
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date: "2026-07-03T04:00:00+00:00"
modified: "2026-07-03T04:00:55.886205+00:00"
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# Class-Grouped Normalized Momentum and Faster Hyperparameter Exploration to Tackle Class Imbalance in Federated Learning

**Source:** Unknown  
**Published:** July 3, 2026  
**Original:** https://arxiv.org/abs/2607.01474  

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