%0 Journal Article %T Clusters and pivots for evaluating a large numberof alternatives in AHP %A Ishizaka %A Alessio %J Pesquisa Operacional %D 2012 %I Sociedade Brasileira de Pesquisa Operacional %R 10.1590/S0101-74382012005000002 %X ahp has been successful in many cases but it has a major limitation: a larger number of alternatives requires a high number of judgements in the comparison matrices. in order to reduce this problem,we present a method with clusters and pivots. this method also helps with a further four problems of the analytic hierarchy process. it enlarges the comparison scale, facilitates the construction of a consistent or near consistent matrix, eliminates the problem of the choice of the priorities derivation method and allows the use of incomparable alternatives. %K supplier selection %K analytic hierarchy process (ahp) %K multicriteria decision making (mcdm). %U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0101-74382012000100006&lng=en&nrm=iso&tlng=en