ergmito_boot function

Bootstrap of ergmito

ergmito_boot(x, ..., R, ncpus = 1L, cl = NULL)

Arguments

• x: Either a formula or an object of class ergmito .
• ...: Additional arguments passed to the method.
• R: Integer. Number of replicates
• ncpus: Integer Number of CPUs to use. Only recommended if ergmito was not compiled with OpenMP (otherwise it will be slower).
• cl: An object of class cluster (see makePSOCKcluster)

Returns

An object of class ergmito_boot and ergmito . This adds three elements to the ergmito object:

• R The number of replicates.
• sample A vector of length R with the cases used in each replicate.
• dist The distribution of fitted parameters.
• nvalid the number of cases used for computing the covar.
• timer_boot records the time the whole process took.

Details

The resulting sample of parameters estimates is then used to compute the variance-covariance matrix of the model. Cases in which Inf/NaN/NA

values were returned are excluded from the calculation.

Examples

data(fivenets)
set.seed(123)
ans0 <- ergmito(fivenets ~ edges + ttriad)
ans1 <- suppressWarnings(ergmito_boot(ans0, R = 100))
ans2 <- suppressWarnings(ergmito_boot(fivenets ~ edges + ttriad, R = 100))

# Checking the differences
summary(ans0)
summary(ans1)
summary(ans2)