GetBfsEffDiam

GetBfsEffDiam(Graph, NTestNodes, IsDir=False)

Returns the (approximation of the) Effective Diameter (90-th percentile of the distribution of shortest path lengths) of a graph (by performing BFS from NTestNodes random starting nodes).

Parameters:

• Graph: graph (input)

  A Snap.py graph or a network.

• NTestNodes: int (input)

  The number of random start nodes to use in the BFS used to calculate the graph diameter and effective diameter.

• IsDir: bool (input)

  Indicates whether the edges should be considered directed or undirected.

Return value:

• float

  The (approximation of the) Effective Diameter of a graph.

The following example shows how to calculate BfsEffDiam for nodes in TNGraph, TUNGraph, and TNEANet:

import snap

Graph = snap.GenRndGnm(snap.PNGraph, 100, 1000)
NTestNodes = 10
IsDir = False
EffDiam = snap.GetBfsEffDiam(Graph, NTestNodes, IsDir)
print EffDiam

UGraph = snap.GenRndGnm(snap.PUNGraph, 100, 1000)
NTestNodes = 10
IsDir = False
EffDiam = snap.GetBfsEffDiam(UGraph, NTestNodes, IsDir)
print EffDiam

Network = snap.GenRndGnm(snap.PNEANet, 100, 1000)
NTestNodes = 10
IsDir = False
EffDiam = snap.GetBfsEffDiam(Network, NTestNodes, IsDir)
print EffDiam