Uses the criterion in Theorem 2 of the paper by Drton, Foygel and Sullivant (2011) to determine whether a mixed graph is globally identifiable.
globalID(graph)
TRUE if the graph is globally identifiable, FALSE otherwise.
a MixedGraph
object representing
the mixed graph.
Drton, M., Barber, R. F., and Sullivant S. (2011). Half-Trek Criterion for Identifiability of Latent Variable Models. Ann. Statist. 39 (2011), no. 2, 865--886 <doi:10.1214/10-AOS859>.