Compute the Jaccard coefficient of all node pairs in ebunch.
Jaccard coefficient of nodes and is defined as
where denotes the set of neighbors of .
- G (graph) – A NetworkX undirected graph.
- ebunch (iterable of node pairs, optional (default = None)) – Jaccard coefficient 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 Jaccard coefficient.
>>> import networkx as nx >>> G = nx.complete_graph(5) >>> preds = nx.jaccard_coefficient(G, [(0, 1), (2, 3)]) >>> for u, v, p in preds: ... '(%d, %d) -> %.8f' % (u, v, p) ... '(0, 1) -> 0.60000000' '(2, 3) -> 0.60000000'
 D. Liben-Nowell, J. Kleinberg. The Link Prediction Problem for Social Networks (2004). http://www.cs.cornell.edu/home/kleinber/link-pred.pdf