build_exchangeable_matrix function

Build an exchangeable matrix of sparseMatrix class

build_exchangeable_matrix(n, phi, directed = TRUE, dyads = NULL)

Arguments

• n: Number of actors in the network, scalar numeric.
• phi: Appropriate-length vector of parameters, must be length 5 or 6 for directed=TRUE or length 2 or 3 for directed=FALSE.
• directed: Optional logical indicator of whether input data is for a directed network, default is TRUE. Undirected data format is lower triangle of adjacencey matrix.
• dyads: Optional numeric vector of dyads to subset the matrix to.

Returns

• out: Exchangeable matrix.

Details

This function builds a covariance matrix in the exchangeable class from the vector of parameters input. See Marrs et.al. (2017).

Examples

n <- 5
build_exchangeable_matrix(n, rphi(n, seed=1))

References

Marrs, F. W., Fosdick, B. K., & McCormick, T. H., (2017). Standard errors for regression on relational data with exchangeable errors. arXiv preprint arXiv:1701.05530.

See Also

rphi, invert_exchangeable_matrix