Shortcuts on this page
r m x toggle line displays
j k next/prev highlighted chunk
0 (zero) top of page
1 (one) first highlighted chunk
1import networkx as nx
3__all__ = ["s_metric"]
6@nx._dispatchable
7def s_metric(G):
8 """Returns the s-metric [1]_ of graph.
10 The s-metric is defined as the sum of the products ``deg(u) * deg(v)``
11 for every edge ``(u, v)`` in `G`.
13 Parameters
14 ----------
15 G : graph
16 The graph used to compute the s-metric.
18 Returns
19 -------
20 s : float
21 The s-metric of the graph.
23 References
24 ----------
25 .. [1] Lun Li, David Alderson, John C. Doyle, and Walter Willinger,
26 Towards a Theory of Scale-Free Graphs:
27 Definition, Properties, and Implications (Extended Version), 2005.
28 https://arxiv.org/abs/cond-mat/0501169
29 """
30 return float(sum(G.degree(u) * G.degree(v) for (u, v) in G.edges()))