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connected_watts_strogatz_graph(n, k, p, tries=100, seed=None)

Attempts to generate a connected graph by repeated generation of Watts–Strogatz small-world graphs. An exception is raised if the maximum number of tries is exceeded.

Notes

First create a ring over $n$ nodes . Then each node in the ring is joined to its $k$ nearest neighbors (or $k - 1$ neighbors if $k$ is odd). Then shortcuts are created by replacing some edges as follows: for each edge $(u, v)$ in the underlying "$n$-ring with $k$ nearest neighbors" with probability $p$ replace it with a new edge $(u, w)$ with uniformly random choice of existing node $w$. The entire process is repeated until a connected graph results.

Parameters

n : int

The number of nodes

k : int

Each node is joined with its k nearest neighbors in a ring topology.

p : float

The probability of rewiring each edge

tries : int

Number of attempts to generate a connected graph.

seed : integer, random_state, or None (default)

Indicator of random number generation state. See Randomness<randomness> .

Returns a connected Watts–Strogatz small-world graph.

See Also

newman_watts_strogatz_graph
watts_strogatz_graph

Examples

See :

Back References

The following pages refer to to this document either explicitly or contain code examples using this.

networkx.generators.random_graphs.watts_strogatz_graph

Local connectivity graph

Hover to see nodes names; edges to Self not shown, Caped at 50 nodes.

Using a canvas is more power efficient and can get hundred of nodes ; but does not allow hyperlinks; , arrows or text (beyond on hover)

SVG is more flexible but power hungry; and does not scale well to 50 + nodes.

All aboves nodes referred to, (or are referred from) current nodes; Edges from Self to other have been omitted (or all nodes would be connected to the central node "self" which is not useful). Nodes are colored by the library they belong to, and scaled with the number of references pointing them


GitHub : /networkx/generators/random_graphs.py#434
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