Client Gradient
Client gradients, the updates calculated by individual devices in federated learning (FL), are central to training shared models on decentralized data without compromising privacy. Current research focuses on improving the efficiency and robustness of FL by addressing challenges like client heterogeneity (e.g., using weighted averaging or gradient masking to mitigate the influence of outliers), privacy vulnerabilities (e.g., developing defenses against gradient inversion attacks), and optimizing client selection strategies (e.g., prioritizing clients with aligned objectives or employing diverse sampling techniques). These advancements are crucial for enabling secure and effective FL across diverse applications, particularly in sensitive domains like healthcare and finance.