This term adds multiple network statistics to the model, one for each of (a subset of) the
unique values of the attr attribute. Each of these statistics
gives the number of times a node with that attribute in the second mode of
the network appears in an edge. The second mode of a bipartite network
object is sometimes known as the "event" mode.
# binary: b2factor(attr, base=1, levels=-1)# valued: b2factor(attr, base=1, levels=-1, form="sum")
a vertex attribute specification (see Specifying Vertex attributes and Levels (?nodal_attributes) for details.)
deprecated
this optional argument controls which levels of the attribute should be included and which should be excluded. (See Specifying Vertex
attributes and Levels (?nodal_attributes) for details.)
how to aggregate tie values in a valued ERGM: "sum"
(the default) for a statistic of the form \(\sum_{i,j} x_{i,j}
y_{i,j}\), where \(y_{i,j}\) is
the value of dyad \((i,j)\) and \(x_{i,j}\) is the
term's covariate associated with it; and "nonzero" with the
edge considered to be present if its value is not 0. See
ergmTerm for more information.
ergmTerm for index of model terms currently visible to the package.
ergm:::.formatTermKeywords("ergmTerm", "b2factor", "subsection")