ggm: MarkEqRcg – R documentation

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ggm

MarkEqRcg

Markov equivalence for regression chain graphs.

Description

MarkEqMag determines whether two RCGs (or subclasses of RCGs) are Markov equivalent.

Usage

MarkEqRcg(amat, bmat)

Arguments

`amat`	An adjacency matrix of an RCG 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`.

Details

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

Value

"Markov Equivalent" or "NOT Markov Equivalent".

Author(s)

Kayvan Sadeghi

References

Wermuth, N. and Sadeghi, K. (2011). Sequences of regressions and their independences. TEST, To appear. http://arxiv.org/abs/1103.2523.

Examples

H1<-matrix(c(0,100,0,0,0,100,0,100,0,0,0,100,0,0,0,1,0,0,0,100,0,0,1,100,0),5,5)
H2<-matrix(c(0,0,0,0,0,1,0,1,0,0,0,0,0,0,0,1,0,0,0,100,0,0,1,100,0),5,5)
H3<-matrix(c(0,0,0,0,0,1,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,1,1,0),5,5)
#MarkEqRcg(H1,H2)
#MarkEqRcg(H1,H3)
#MarkEqRcg(H2,H3)

ggm

Graphical Markov Models with Mixed Graphs

v2.5

GPL-2

Authors

Giovanni M. Marchetti, Mathias Drton, Kayvan Sadeghi

Initial release

2020-02-014