ASTM                    ASTM D1990 procedures for finding the subset of
                        controlling species.
CDF.eBayes              An empirical Bayes approach to the subset
                        selection problem.
MCMC.DPw                A semiparametric Bayesian approach to the
                        subset selection problem
get.subset              Return the subset of controlling species.
useSamp                 Discrad burn-in from the MCMC output and thin
                        the remaining output
