ggm (version 2.5.1)

MarkEqMag: Markov equivalence of maximal ancestral graphs

Description

MarkEqMag determines whether two MAGs are Markov equivalent.

Usage

MarkEqMag(amat, bmat)

Value

"Markov Equivalent" or "NOT Markov Equivalent".

Arguments

amat

An adjacency matrix of a MAG, or a graph that can be a graphNEL or an igraph object or a vector of length \(3e\), where \(e\) is the number of edges of the graph, that is a sequence of triples (type, node1label, node2label). The type of edge can be "a" (arrows from node1 to node2), "b" (arcs), and "l" (lines).

bmat

The same as amat.

Author

Kayvan Sadeghi

Details

The function checks whether the two graphs have the same skeleton and colliders with order.

References

Ali, R.A., Richardson, T.S. and Spirtes, P. (2009) Markov equivalence for ancestral graphs. Annals of Statistics, 37(5B),2808-2837.

See Also

MarkEqRcg, msep

Examples

H1<-matrix(  c(0,100,  0,  0,
	         100,  0,100,  0,
               0,100,  0,100,
               0,  1,100,  0), 4, 4)
H2<-matrix(c(0,0,0,0,1,0,100,0,0,100,0,100,0,1,100,0),4,4)
H3<-matrix(c(0,0,0,0,1,0,0,0,0,1,0,100,0,1,100,0),4,4)
MarkEqMag(H1,H2)
MarkEqMag(H1,H3)
MarkEqMag(H2,H3)