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Baidu Tech Salon
Baidu Tech Salon
Aug 30, 2023 · Artificial Intelligence

How Spatial Heterophily Improves Urban Graph Neural Networks

Urban graphs often exhibit spatial heterophily, where neighboring nodes differ significantly, limiting traditional GNNs; this article introduces a Spatial Heterophily Aware GNN (SHGNN) that partitions neighborhoods by geographic proximity, employs rotation‑scaling aggregation and heterophily‑sensitive interaction, and demonstrates superior performance on three real city datasets.

Heterophily-AwareNode RepresentationPGL
0 likes · 13 min read
How Spatial Heterophily Improves Urban Graph Neural Networks
Baidu Intelligent Testing
Baidu Intelligent Testing
Oct 19, 2021 · Artificial Intelligence

Graph-Based Anti-Fraud: Gang Mining and Node Representation for Account Security

This article describes how Baidu's account security team leverages large‑scale graph technology and graph neural networks to detect and characterize black‑industry cheating gangs, presents a customized GraphSAGE link‑prediction model, and evaluates its superiority over MLP and GCN embeddings for downstream risk‑control tasks.

Node Representationanti-fraudgraph neural networks
0 likes · 12 min read
Graph-Based Anti-Fraud: Gang Mining and Node Representation for Account Security