2021

Identity-aware Graph Neural Networks

You, Jiaxuan, Gomes-Selman, Jonathan, Ying, Rex et al.

Understand

Message passing Graph Neural Networks (GNNs) provide a powerful modeling framework for relational data.

  • However, the expressive power of existing GNNs is upper-bounded by the 1-Weisfeiler-Lehman (1-WL) graph isomorphism test, which means GNNs that are not able to predict node clustering coefficients and shortest path distances, and cannot differentiate between different d-regular graphs.
  • Here we develop a class of message passing GNNs, named Identity-aware Graph Neural Networks (ID-GNNs), with greater expressive power than the 1-WL test.
  • ID-GNN offers a minimal but powerful solution to limitations of existing GNNs.

Reading the bibliography…