ancestor_aid            Ancestor Adjustment Identification Distance
                        between two DAG / CPDAG adjacency matrices
oset_aid                Optimal Adjustment Identification Distance
                        between two DAG / CPDAG adjacency matrices
parent_aid              Parent Adjustment Identification Distance
                        between two DAG / CPDAG adjacency matrices
shd                     Structural Hamming Distance between two DAG /
                        CPDAG adjacency matrices
sid                     Structural Identification Distance between two
                        DAG adjacency matrices
