Mercurial > repos > shellac > sam_consensus_v3
diff env/lib/python3.9/site-packages/networkx/algorithms/smetric.py @ 0:4f3585e2f14b draft default tip
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author | shellac |
---|---|
date | Mon, 22 Mar 2021 18:12:50 +0000 |
parents | |
children |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/env/lib/python3.9/site-packages/networkx/algorithms/smetric.py Mon Mar 22 18:12:50 2021 +0000 @@ -0,0 +1,36 @@ +import networkx as nx + + +def s_metric(G, normalized=True): + """Returns the s-metric of graph. + + The s-metric is defined as the sum of the products deg(u)*deg(v) + for every edge (u,v) in G. If norm is provided construct the + s-max graph and compute it's s_metric, and return the normalized + s value + + Parameters + ---------- + G : graph + The graph used to compute the s-metric. + normalized : bool (optional) + Normalize the value. + + Returns + ------- + s : float + The s-metric of the graph. + + References + ---------- + .. [1] Lun Li, David Alderson, John C. Doyle, and Walter Willinger, + Towards a Theory of Scale-Free Graphs: + Definition, Properties, and Implications (Extended Version), 2005. + https://arxiv.org/abs/cond-mat/0501169 + """ + if normalized: + raise nx.NetworkXError("Normalization not implemented") + # Gmax = li_smax_graph(list(G.degree().values())) + # return s_metric(G,normalized=False)/s_metric(Gmax,normalized=False) + # else: + return float(sum([G.degree(u) * G.degree(v) for (u, v) in G.edges()]))