greenclust - Combine Categories Using Greenacre's Method
Implements a method of iteratively collapsing the rows of
a contingency table, two at a time, by selecting the pair of
categories whose combination yields a new table with the
smallest loss of chi-squared, as described by Greenacre, M.J.
(1988) <doi:10.1007/BF01901670>. The result is compatible with
the class of object returned by the 'stats' package's hclust()
function and can be used similarly (plotted as a dendrogram,
cut, etc.). Additional functions are provided for automatic
cutting and diagnostic plotting.
