Get community membership by edge betweenness

Using edge betweenness, obtain the group membership values for each of the nodes in the graph.

Usage

get_cmty_edge_btwns(graph)

Arguments

graph

A graph object of class dgr_graph.

Value

A data frame with group membership assignments for each of the nodes.

Examples

# Create a random graph using the
# `add_gnm_graph()` function
graph <-
  create_graph(
    directed = FALSE) %>%
  add_gnm_graph(
    n = 10,
    m = 15,
    set_seed = 23)

# Get the group membership
# values for all nodes in the
# graph through calculation of
# the leading non-negative
# eigenvector of the modularity
# matrix of the graph
graph %>%
  get_cmty_edge_btwns()
#>    id edge_btwns_group
#> 1   1                1
#> 2   2                2
#> 3   3                2
#> 4   4                3
#> 5   5                2
#> 6   6                2
#> 7   7                1
#> 8   8                3
#> 9   9                3
#> 10 10                4

# Add the group membership
# values to the graph
# as a node attribute
graph <-
  graph %>%
  join_node_attrs(
     df = get_cmty_edge_btwns(.))

# Display the graph's
# node data frame
graph %>% get_node_df()
#>    id type label edge_btwns_group
#> 1   1 <NA>     1                1
#> 2   2 <NA>     2                2
#> 3   3 <NA>     3                2
#> 4   4 <NA>     4                3
#> 5   5 <NA>     5                2
#> 6   6 <NA>     6                2
#> 7   7 <NA>     7                1
#> 8   8 <NA>     8                3
#> 9   9 <NA>     9                3
#> 10 10 <NA>    10                4