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News/Diagnosing GNN Failure Modes with Layer-Wise Probe Entropy
arxiv
PublishedOctober 19, 2026 at 4:00 AM

Diagnosing GNN Failure Modes with Layer-Wise Probe Entropy

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arXiv:2610.22595v1 Announce Type: new Abstract: Graph neural networks (GNNs) are typically evaluated only at their final layer, obscuring how task-relevant information evolves during message passing. We introduce a post-hoc diagnostic that freezes a trained GNN, fits an independent linear probe to e

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