Implements an efficient O(n) algorithm based on bucket-sorting for
fast computation of standard clustering comparison measures. Available measures
include adjusted Rand index (ARI), normalized information distance (NID),
normalized mutual information (NMI), adjusted mutual information (AMI),
normalized variation information (NVI) and entropy, as described in Vinh et al (2009)
NEWS/Changelog
0.1-1 (2018-04-30) + first submission to CRAN