This term adds one network statistic to the model for
each element in d ; the \(i\)th such statistic equals the number of
nodes of degree d[i] in the first mode of a bipartite network, i.e.
with exactly d[i] edges. The first mode of a bipartite network object
is sometimes known as the "actor" mode.
# binary: b1degree(d, by=NULL, levels=NULL)a vector of distinct integers.
the optional argument by specifies a vertex attribute (see Specifying
Vertex attributes and Levels (?nodal_attributes) for details).
If this is specified and homophily is TRUE ,
then degrees are calculated using the subnetwork consisting of only
edges whose endpoints have the same value of the by attribute.
If by is specified and
homophily is FALSE (the default), then separate degree range
statistics are calculated for nodes having each separate
value of the attribute. levels selects which levels of by` to include.
ergmTerm for index of model terms currently visible to the package.
ergm:::.formatTermKeywords("ergmTerm", "b1degree", "subsection")