Ego network

Submatrix of ego's neighbourhoods

Usage

ego_net(
  A,
  ego = NULL,
  bipartite = FALSE,
  addEgo = FALSE,
  select = c("all", "in", "out")
)

Arguments

A

A symmetric matrix object

ego

Name of ego in the matrix

bipartite

Whether the matrix is a two-mode network

addEgo

Whether to retain ego in the submatrix or not

select

Whether to consider all sender and receiver ties of ego (all), only incoming ties (in), or outgoing ties (out). By default, all.

Value

This function returns redundancy, effective size and efficincy measures (Burt, 1992).

References

Burt, R.S., 1992. Structural Holes: the Social Structure of Competition. Harvard University Press, Cambridge.

Borgatti, S., 1997. Unpacking Burt's redundancy measure. Connections, 20(1): 35-38. doi: http://www.analytictech.com/connections/v20(1)/holes.htm

Author

Alejandro Espinosa-Rada

Examples

A <- matrix(c(
  0, 1, 0, 0, 1, 1, 1,
  1, 0, 0, 1, 0, 0, 1,
  0, 0, 0, 0, 0, 0, 1,
  0, 1, 0, 0, 0, 0, 1,
  1, 0, 0, 0, 0, 0, 1,
  1, 0, 0, 0, 0, 0, 1,
  1, 1, 1, 1, 1, 1, 0
), ncol = 7, byrow = TRUE)
rownames(A) <- letters[1:nrow(A)]
colnames(A) <- letters[1:ncol(A)]
ego_net(A, ego = "g")
#>   a b c d e f
#> a 0 1 0 0 1 1
#> b 1 0 0 1 0 0
#> c 0 0 0 0 0 0
#> d 0 1 0 0 0 0
#> e 1 0 0 0 0 0
#> f 1 0 0 0 0 0