ó ,ľ[c@sddlZed„ZdS(i˙˙˙˙NcCs]|rtjdƒ‚nttg|jƒD](\}}|j|ƒ|j|ƒ^q+ƒƒS(sReturn 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 sNormalization not implemented(tnxt NetworkXErrortfloattsumtedgestdegree(tGt normalizedtutv((s:lib/python2.7/site-packages/networkx/algorithms/smetric.pyts_metrics(tnetworkxRtTrueR (((s:lib/python2.7/site-packages/networkx/algorithms/smetric.pyts