load own adjacency matrix and features about pygcn HOT 1 OPEN

To take a crack at your second question: we want to add the identity matrix to our adjacency matrix in order to add self-loops onto each node. If we did not do this, at each propagation we would only be aggregating the features of each node's neighborhood without accounting for the features of the node itself. Adding self-loops allows us to aggregate a node's features with its neighbor's features (because it acts as its own neighbor).

from pygcn.