Theory

On the Expressive Power of Geometric Graph Neural Networks
We propose a Geometric Weisfeiler-Leman test to study the expressive power of Geometric Graph Neural Networks and demonstrate the advantages of equivariant GNNs over invariant GNNs. (Oral presentation at NeurIPS 2022 Workshop)
Chaitanya K. Joshi, Cristian Bodnar, Simon V. Mathis, Taco Cohen, Pietro Liò
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On the Expressive Power of Geometric Graph Neural Networks