Cutello, V.Montero, Javier2023-06-202023-06-2019950218-488510.1142/S0218488595000037https://hdl.handle.net/20.500.14352/57635In this paper we will analyze some computational problems related with ordered hierarchical aggregations of OWA operators as defined by the authors in a previous paper. In particular, we will provide polynomial algorithms to maximize or minimize the degrees of dispersion and orness of the hierarchical OWA aggregation.engHierarchical aggregation of OWA operators: basic measures and related computational problems.journal articlehttp://www.worldscinet.com/ijufks/03/0301/S0218488595000037.htmlhttp://www.worldscinet.comrestricted access519.8Combinatorial programmingAggregation operatorsCombinatorial optimizationInvestigación operativa (Matemáticas)1207 Investigación Operativa