Graph-MLP: Node Classification without Message Passing in Graph

• URL: http://arxiv.org/abs/2106.04051v1
• Date: Tue, 8 Jun 2021 02:07:21 GMT
• Title: Graph-MLP: Node Classification without Message Passing in Graph
• Authors: Yang Hu, Haoxuan You, Zhecan Wang, Zhicheng Wang, Erjin Zhou, Yue Gao
• Abstract summary: Graph Neural Network (GNN) has been demonstrated its effectiveness in dealing with non-Euclidean structural data. Recent works have mainly focused on powerful message passing modules, however, in this paper, we show that none of the message passing modules is necessary. We propose a pure multilayer-perceptron-based framework, Graph-MLP with the supervision signal leveraging graph structure.
• Score: 28.604893350871777
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Graph Neural Network (GNN) has been demonstrated its effectiveness in dealing with non-Euclidean structural data. Both spatial-based and spectral-based GNNs are relying on adjacency matrix to guide message passing among neighbors during feature aggregation. Recent works have mainly focused on powerful message passing modules, however, in this paper, we show that none of the message passing modules is necessary. Instead, we propose a pure multilayer-perceptron-based framework, Graph-MLP with the supervision signal leveraging graph structure, which is sufficient for learning discriminative node representation. In model-level, Graph-MLP only includes multi-layer perceptrons, activation function, and layer normalization. In the loss level, we design a neighboring contrastive (NContrast) loss to bridge the gap between GNNs and MLPs by utilizing the adjacency information implicitly. This design allows our model to be lighter and more robust when facing large-scale graph data and corrupted adjacency information. Extensive experiments prove that even without adjacency information in testing phase, our framework can still reach comparable and even superior performance against the state-of-the-art models in the graph node classification task.

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