FedGRec: Dynamic Spatio-Temporal Federated Graph Learning for Secure and Efficient Cross-Border Recommendations Article Swipe

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Zhi Tan , Jieyun Zheng , Xingxing Yang , Chi Zhang , Deng Wen-xin , Wenyong Wang · YOU? · · 2025 · Open Access · · DOI: https://doi.org/10.48550/arxiv.2505.18177

Due to the highly sensitive nature of certain data in cross-border sharing, collaborative cross-border recommendations and data sharing are often subject to stringent privacy protection regulations, resulting in insufficient data for model training. Consequently, achieving efficient cross-border business recommendations while ensuring privacy security poses a significant challenge. Although federated learning has demonstrated broad potential in collaborative training without exposing raw data, most existing federated learning-based GNN training methods still rely on federated averaging strategies, which perform suboptimally on highly heterogeneous graph data. To address this issue, we propose FedGRec, a privacy-preserving federated graph learning method for cross-border recommendations. FedGRec captures user preferences from distributed multi-domain data to enhance recommendation performance across all domains without privacy leakage. Specifically, FedGRec leverages collaborative signals from local subgraphs associated with users or items to enrich their representation learning. Additionally, it employs dynamic spatiotemporal modeling to integrate global and local user preferences in real time based on business recommendation states, thereby deriving the final representations of target users and candidate items. By automatically filtering relevant behaviors, FedGRec effectively mitigates noise interference from unreliable neighbors. Furthermore, through a personalized federated aggregation strategy, FedGRec adapts global preferences to heterogeneous domain data, enabling collaborative learning of user preferences across multiple domains. Extensive experiments on three datasets demonstrate that FedGRec consistently outperforms competitive single-domain and cross-domain baselines while effectively preserving data privacy in cross-border recommendations.

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preprint

Language

en

Landing Page

http://arxiv.org/abs/2505.18177

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https://arxiv.org/pdf/2505.18177

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green

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https://openalex.org/W4414580867

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OpenAlex ID

https://openalex.org/W4414580867

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DOI

https://doi.org/10.48550/arxiv.2505.18177

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Title

FedGRec: Dynamic Spatio-Temporal Federated Graph Learning for Secure and Efficient Cross-Border Recommendations

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preprint

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Language

en

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Publication year

2025

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Publication date

2025-05-15

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Authors

Zhi Tan, Jieyun Zheng, Xingxing Yang, Chi Zhang, Deng Wen-xin, Wenyong Wang

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https://arxiv.org/abs/2505.18177

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https://arxiv.org/pdf/2505.18177

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Yes

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green

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https://arxiv.org/pdf/2505.18177

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0

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