class_var(): Returns the class variable.
features(): Returns the features.
vars(): Returns all variables (i.e., features + class).
families(): Returns the family of each variable.
modelstring(): Returns the model string of the network in bnlearn format (adding a space in between two families).
feature_families(): Returns the family of each feature.
narcs(): Returns the number of arcs.
is_semi_naive(): Returns TRUE if x is a semi-naive Bayes.
is_anb(): Returns TRUE if x is an augmented naive Bayes.
is_nb(): Returns TRUE if x is a naive Bayes.
is_ode(): Returns TRUE if x is a one-dependence estimator.