gwb1dsp-ergmTerm {ergm}

Geometrically weighted dyadwise shared partner distribution for dyads in the first bipartition

Description

This term adds one network statistic to the model equal to the geometrically weighted dyadwise shared partner distribution for dyads in the first bipartition with decay parameter decay parameter, which should be non-negative. This term can only be used with bipartite networks.

Usage

# binary: gwb1dsp(decay=0, fixed=FALSE, cutoff=30)

Arguments

decay

nonnegative decay parameter for the shared partner counts; required if fixed=TRUE and ignored with a warning otherwise.

fixed

optional argument indicating whether the decay parameter is fixed at the given value, or is to be fit as a curved exponential-family model (see Hunter and Handcock, 2006). The default is FALSE , which means the scale parameter is not fixed and thus the model is a curved exponential family.

cutoff

This optional argument sets the number of underlying b1dsp terms to use in computing the statistics when fixed=FALSE, in order to reduce the computational burden. Its default value can also be controlled by the gw.cutoff term option control parameter. (See ?control.ergm.)

Note

This term takes an additional term option (see options?ergm), cache.sp, controlling whether the implementation will cache the number of shared partners for each dyad in the network; this is usually enabled by default.

See Also

ergmTerm for index of model terms currently visible to the package.

Keywords

bipartite, curved, undirected, binary