reduce_graph: Create reduced graph of important nodes

In elizagrames/litsearchr: Automated Search Term Selection and Search Strategy for Systematic Reviews

Description

Takes the full graph and reduces it to only include nodes (and associated edges) greater than the cutoff strength for important nodes.

Usage

reduce_graph(graph, cutoff_strength, imp_method = "strength")

Arguments

graph	the full graph object
cutoff_strength	the minimum node importance to be included in the reduced graph
imp_method	a character specifying the importance measurement to be used; takes arguments of "strength", "eigencentrality", "alpha", "betweenness", "hub" or "power"

Value

an igraph graph with only important nodes

Examples

dfm <- create_dfm(
  elements = c(
    "Cross-scale occupancy dynamics of a postfire specialist
    in response to variation across a fire regime",
    "Variation in home-range size of Black-backed Woodpeckers",
    "Black-backed woodpecker occupancy in burned and beetle-killed forests"
  ),
  features = c("occupancy", "variation", "black-backed woodpecker", "burn")
)

my_network <- create_network(search_dfm = as.matrix(dfm),
                             min_studies = 1,
                             min_occ = 1)


reduce_graph(my_network, cutoff_strength = 1)

elizagrames/litsearchr documentation built on April 14, 2021, 3:42 p.m.