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networkx.generators.community.gaussian_random_partition_graph

gaussian_random_partition_graph(n, s, v, p_in, p_out, directed=False, seed=None)[source]

Generate a Gaussian random partition graph.

A Gaussian random partition graph is created by creating k partitions each with a size drawn from a normal distribution with mean s and variance s/v. Nodes are connected within clusters with probability p_in and between clusters with probability p_out[1]

Parameters:
  • n (int) – Number of nodes in the graph
  • s (float) – Mean cluster size
  • v (float) – Shape parameter. The variance of cluster size distribution is s/v.
  • p_in (float) – Probabilty of intra cluster connection.
  • p_out (float) – Probability of inter cluster connection.
  • directed (boolean, optional default=False) – Whether to create a directed graph or not
  • seed (int) – Seed value for random number generator
Returns:

G – gaussian random partition graph
Return type:

NetworkX Graph or DiGraph
Raises:

NetworkXError – If s is > n If p_in or p_out is not in [0,1]

Notes

Note the number of partitions is dependent on s,v and n, and that the last partition may be considerably smaller, as it is sized to simply fill out the nodes [1]

See also

random_partition_graph()

Examples

>>> G = nx.gaussian_random_partition_graph(100,10,10,.25,.1)
>>> len(G)
100

References

[1]Ulrik Brandes, Marco Gaertler, Dorothea Wagner, Experiments on Graph Clustering Algorithms, In the proceedings of the 11th Europ. Symp. Algorithms, 2003.