It can be seen that compared to GCN, the modification of GCNII lies in the combination of smoothed representation 1 and initial representation 2 in each convolutional layer, as well as the addition of unit mapping i in the weight matrix w.
It can be seen that compared with GCN, the change of GCNII lies in combining the smoothed representation 1 with the initial representation 2 at each convolution layer and adding the unit mapping I to the weight matrix W.