This term adds multiple network
statistics to the model, one for each of (a subset of) the unique
values of the attr attribute (or each combination of the
attributes given). Each of these statistics gives the number of
times a node with that attribute or those attributes appears as the
terminal node of a directed tie.
For an analogous term for quantitative vertex attributes, see nodeicov .
# binary: nodeifactor(attr, base=1, levels=-1)# valued: nodeifactor(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", "nodeifactor", "subsection")