expansion {clustAnalytics}

Expansion

Description

Given a graph (possibly weighted) split into communities, the expansion of a community is the sum of all edge weights connecting it to the rest of the graph divided by the number of vertices in the community

Usage

expansion(g, com)

Arguments

g

Graph to be analyzed (as an igraph object). If the edges have a "weight" attribute, those will be used as weights.

com

community membership integer vector. Each element corresponds to a vertex.

Value

Numeric vector with the expansion of each community.

See Also

Other cluster scoring functions: FOMD(), average_degree(), average_odf(), conductance(), coverage(), cut_ratio(), density_ratio(), edges_inside(), internal_density(), max_odf(), normalized_cut(), scoring_functions(), weighted_clustering_coefficient(), weighted_transitivity()

Examples

data(karate, package="igraphdata")
expansion(karate, membership(cluster_louvain(karate)))