The ‘gRbase’ package provides graphical modelling features used by e.g. the packages ‘gRain’, ‘gRim’ and ‘gRc’.
Author: Søren Højsgaard
https://hojsgaard.github.io/gRbase
https://github.com/hojsgaard/gRbase
https://cran.r-project.org/web/packages/gRbase/index.html
http://people.math.aau.dk/~sorenh/software/gR/