cmpGraph | R Documentation |
Finds the complementary graph of an undirected graph.
cmpGraph(amat)
amat |
the adjacency matrix of an undirected graph |
The complementary graph of an UG is the graph that has the same set
of nodes and an undirected edge connecting i
and j
whenever there is not an (i,j)
edge in the original UG.
the edge matrix of the complementary graph.
Giovanni M. Marchetti
Lauritzen, S. (1996). Graphical models. Oxford: Clarendon Press.
UG
, DAG
## A chordless four-cycle
four <- UG(~ a*b + b*d + d*e + e*a)
four
cmpGraph(four)
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