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Triad Census

Source: R/motifs.R
triad_census.Rd

Count the 16 types of triads in a directed network using MAN notation.

Usage

triad_census(x)

Arguments

x

A matrix, igraph object, or cograph_network

Value

Named vector of triad counts

Details

Triad census is defined only for directed networks. The input is always treated as directed.

MAN notation describes triads by:

  • M: number of Mutual (reciprocal) edges

  • A: number of Asymmetric edges

  • N: number of Null (absent) edges

The 16 triad types are: 003, 012, 102, 021D, 021U, 021C, 111D, 111U, 030T, 030C, 201, 120D, 120U, 120C, 210, 300

See also

motifs() for the unified API, motif_census()

Other motifs: extract_motifs(), extract_triads(), get_edge_list(), motif_census(), motifs(), plot.cograph_motif_analysis(), plot.cograph_motifs(), subgraphs()

Examples

mat <- matrix(sample(0:1, 100, replace = TRUE), 10, 10)
diag(mat) <- 0
triad_census(mat)
#>  003  012  102 021D 021U 021C 111D 111U 030T 030C  201 120D 120U 120C  210  300 
#>    1   14    5    3    4   11    7   17    5    5    5    9    5   11   14    4