The first layer takes an average of each sample and its immediate neighbours (labelled and unlabelled) using weights inÂ, and performs a linear transformation using W and b followed by a nonlinear activation function (σ).
for user u i , the output of layer l is computed by: 1 Code and data available at https://github.com/ afshinrahimi/geographconv  Figure 1: The architecture of GCN geolocation model with layer-wise highway gates (W i h , b i h ).