By default, this term adds one statistic to the model, equal to the number of transitive
triples in the network, defined as a set of edges \(\{(i{\rightarrow}j),
j{\rightarrow}k), (i{\rightarrow}k)\}\) . Note that
triangle equals ttriple+ctriple for a directed network, so at
most two of the three terms can be in a model.
# binary: ttriple(attr=NULL, diff=FALSE, levels=NULL)# binary: ttriad
a vertex attribute specification (see Specifying Vertex attributes and Levels (?nodal_attributes) for details.)
If attr is specified and diff is FALSE ,
then the count is over the number of transitive triples where all three nodes have the same value of
the attribute. If attr is specified and diff is TRUE ,
then one statistic is added for each value of attr ,
equal to the number of triangles where all three nodes have that value of the attribute.
add one statistic for each value specified if diff is TRUE. (See Specifying Vertex
attributes and Levels (?nodal_attributes) for details.)
ergmTerm for index of model terms currently visible to the package.
ergm:::.formatTermKeywords("ergmTerm", "ttriple", "subsection")