BruteAggreg             Weighted Rank Aggregation via brute force
                        algorithm
RankAggreg              Weighted Rank Aggregation of partial ordered
                        lists
kendall                 Kendall's tau distance (weighted and
                        unweighted)
mcmcProc                MCMC procedure used by the Cross-Entropy Monte
                        Carlo algorithm.
spearman                Spearman footrule distance
upd.prob                Function for updating the probability matrix in
                        the Cross-Entropy algorithm
