2020

Geom-GCN: Geometric Graph Convolutional Networks

Pei, Hongbin, Wei, Bingzhe, Chang, Kevin Chen-Chuan et al.

Understand

Message-passing neural networks (MPNNs) have been successfully applied to representation learning on graphs in a variety of real-world applications.

  • However, two fundamental weaknesses of MPNNs' aggregators limit their ability to represent graph-structured data: losing the structural information of nodes in neighborhoods and lacking the ability to capture long-range dependencies in disassortative graphs.
  • Few studies have noticed the weaknesses from different perspectives.
  • From the observations on classical neural network and network geometry, we propose a novel geometric aggregation scheme for graph neural networks to overcome the two weaknesses.

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