migraph (version 0.10.6)

cohesion: Measures of network cohesion or connectedness

Description

These functions return values or vectors relating to how connected a network is and where the nodes or edges that would increase fragmentation are.

Usage

graph_density(object)
graph_components(object)
graph_cohesion(object)
graph_adhesion(object)
graph_diameter(object)
graph_length(object)

Arguments

object

An object of a migraph-consistent class:

• matrix (adjacency or incidence) from {base} R

• edgelist, a data frame from {base} R or tibble from {tibble}

• igraph, from the {igraph} package

• network, from the {network} package

• tbl_graph, from the {tidygraph} package

Functions

• graph_density: summarises the ratio of ties to the number of possible ties.

• graph_components: Returns number of (strong) components in the network. To get the 'weak' components of a directed graph, please use to_undirected() first.

• graph_cohesion: Returns the minimum number of nodes to remove from the network needed to increase the number of components.

• graph_adhesion: Returns the minimum number of edges needed to remove from the network to increase the number of components.

• graph_diameter: Returns the maximum path length in the network.

• graph_length: Returns the average path length in the network.

References

White, Douglas R and Frank Harary. 2001. "The Cohesiveness of Blocks In Social Networks: Node Connectivity and Conditional Density." Sociological Methodology 31(1): 305-59.

See Also

Other measures: centralisation, centrality, closure, diversity, features, holes

Examples

graph_density(mpn_elite_mex)
graph_density(mpn_elite_usa_advice)
graph_cohesion(ison_marvel_relationships)
graph_cohesion(to_main_component(ison_marvel_relationships))
graph_adhesion(ison_marvel_relationships)
graph_adhesion(to_main_component(ison_marvel_relationships))
graph_diameter(ison_marvel_relationships)
graph_diameter(to_main_component(ison_marvel_relationships))
graph_length(ison_marvel_relationships)
graph_length(to_main_component(ison_marvel_relationships))