GCN layers can be written as graph convolutions

We can write a graph convolutional network layer as a graph convolution. This is easy to see by simply writing

Which is exactly the form of a graph convolution with

• $K=2$
• $S=D_{\text{binary}}^{-1/2}{A}_{\text{binary}}{D}_{\text{binary}}^{-1/2}$
• $H_{\ell ,0}=0,H_{\ell ,1}=H_{\ell }$

And $A_{\text{binary}}$ is the binary adjacency matrix (given as A[A>0] in Python)