This term adds one network statistic to the model for each element in d ; the \(i\) th
such statistic equals the number of dyads in the second bipartition with exactly
d[i] shared partners. (Those shared partners, of course, must be members
of the first bipartition.) This term can only be used with bipartite networks.
# binary: b2dsp(d)a vector of distinct integers
ergmTerm for index of model terms currently visible to the package.
ergm:::.formatTermKeywords("ergmTerm", "b2dsp", "subsection")