Quantum-inspired observables reveal poor signal routing in standard spectral GNNs and motivate Schrödinger GNNs with superior propagation capacity.
B Computational realization of Schrödinger GNNs In this appendix, we explain how the Schrödinger graph signal processing introduced in Section 3 is instantiated in practice
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Beyond Oversquashing: Understanding Signal Propagation in GNNs Via Observables
Quantum-inspired observables reveal poor signal routing in standard spectral GNNs and motivate Schrödinger GNNs with superior propagation capacity.