The Hidden Weakness in Graph Neural Networks

The analysis of model performance under varying degrees of data incompleteness-quantified by μ-reveals a critical discrepancy between established benchmarks, which maintain accuracy even with substantial data loss, and newly proposed datasets, which expose performance vulnerabilities at levels of missingness commonly encountered in real-world applications, suggesting a need to reassess evaluation protocols.

New research reveals that current evaluations of graph neural networks’ ability to handle missing data are misleading, potentially overstating their robustness in real-world scenarios.