Compute the preferential attachment score of all node pairs in ebunch.
Preferential attachment score of u and v is defined as
where \(\Gamma(u)\) denotes the set of neighbors of \(u\).
G (graph) – NetworkX undirected graph.
ebunch (iterable of node pairs, optional (default = None)) – Preferential attachment score will be computed for each pair of
nodes given in the iterable. The pairs must be given as
2-tuples (u, v) where u and v are nodes in the graph. If ebunch
is None then all non-existent edges in the graph will be used.
Default value: None.
piter – An iterator of 3-tuples in the form (u, v, p) where (u, v) is a
pair of nodes and p is their preferential attachment score.