Cutello, VincenzoMontero De Juan, Francisco Javier2023-06-202023-06-201995Cutello, V., Montero, J.: HIERARCHICAL AGGREGATION OF OWA OPERATORS: BASIC MEASURES AND RELATED COMPUTATIONAL PROBLEMS. Int. J. Unc. Fuzz. Knowl. Based Syst. 03, 17-26 (1995). https://doi.org/10.1142/S02184885950000370218-488510.1142/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.engjournal articlehttps//doi.org/10.1142/S0218488595000037http://www.worldscinet.com/ijufks/03/0301/S0218488595000037.htmlrestricted access519.8Combinatorial programmingAggregation operatorsCombinatorial optimizationInvestigación operativa (Matemáticas)1207 Investigación Operativa