Concept

GNNs Without Message Passing

Several recent Graph Neural Network (GNN) models propose removing message passing to simplify the network. These models can be generally defined as: Z=MLPθ(f(A)MLPϕ(X))\mathbf{Z} = MLP_{\theta}(f(\mathbf{A}) MLP_{\phi}(\mathbf{X}) ) where MLPMLP denotes a dense neural network and ff is some deterministic function. For example, Wu defines ff as: f(A)=A~kf(\mathbf{A}) = \tilde{\mathbf{A}}^k. The intuition is that trainable parameters are not required in the convolution layer. Rather, a dense layer can be applied at the start and end of the network, and a deterministic convolutional layer in the middle can be used to incorporate the graph structure. These models have been proven to outperform parameterized message passing models on many classification benchmarks.

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Updated 2026-06-13

Tags

Deep Learning (in Machine learning)

Data Science

Computing Sciences