AMI                     Adjusted Mutual Information
ARI                     Adjusted Rand Index
Chi2                    Chi-square statistics
Frobenius               Frobenius norm
MARI                    Modified Adjusted Rand Index
NID                     Normalized information distance (NID)
NMI                     Normalized mutual information (NMI)
NVI                     Normalized variation of information (NVI)
RI                      Rand Index
compare_clustering      Measures of similarity between two
                        classification
entropy                 Entropy
sort_pairs              Sort Pairs
