El DCS tiene el agrado de invitarlo al vigésimo quinto coloquio a realizarse este miércoles 15 de enero del 2014, de 11:30 a 12:30 en la sala 505 (Diagonal Paraguay 257).

Título - Aggregation Systems and Decision Making

Autor y Expositor - José María Merigó (Manchester Business School, University of Manchester)

Abstract - The ordered weighted average (OWA) is an aggregation operator that provides a parameterized family of operators between the minimum and the maximum. In decision analysis, it unifies the classical methods for decision making under uncertainty in the same formulation including the Laplace and the Hurwicz criteria. Thus, it is possible to establish the attitudinal character of the decision maker according to a degree of optimism or pessimism. This presentation gives a general overview of the OWA operator and some of its main generalizations including the induced OWA, the probabilistic OWA and the OWA distance. It is observed that some of the generalizations of the OWA operator include the weighted average and other key statistical concepts as particular cases of a more general framework. Therefore, the applicability of the OWA operator is very broad because all the previous studies that use one of these statistical techniques can be revised and extended with a more general formulation that considers more complex environments. But at the same time, it can be reduced to the classical approach if the available information is very simple. A general overview of decision making applications with the OWA operator is also presented. Some other applications in other research fields are also mentioned.