2019

LanczosNet: Multi-Scale Deep Graph Convolutional Networks

Liao, Renjie, Zhao, Zhizhen, Urtasun, Raquel et al.

Understand

We propose the Lanczos network (LanczosNet), which uses the Lanczos algorithm to construct low rank approximations of the graph Laplacian for graph convolution.

  • Relying on the tridiagonal decomposition of the Lanczos algorithm, we not only efficiently exploit multi-scale information via fast approximated computation of matrix power but also design learnable spectral filters.
  • Being fully differentiable, LanczosNet facilitates both graph kernel learning as well as learning node embeddings.
  • We show the connection between our LanczosNet and graph based manifold learning methods, especially the diffusion maps.

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