Bayesian network analysis is a form of probabilistic graphical models which derives from empirical data a directed acyclic graph (DAG)
In order to best profit from the abn features additonal libraries are recommended.
install.packages("abn")
install.packages("INLA", repos=c(getOption("repos"), INLA="https://inla.r-inla-download.org/R/stable"), dep=TRUE)
if (!requireNamespace("BiocManager", quietly = TRUE))
install.packages("BiocManager")
BiocManager::install("Rgraphviz", version = "3.8")