Dynamic MCDM for Multi Group Decision Making

Multiple Criteria Decision Making (MCDM) models make preference decisions over multiple attributes’ alternatives available, which in most of the cases conflict among themselves. On the other hand, the classic MCDM model assumes that the decision maker has a pre-defined fixed set of criteria, when taking a decision, and is presented with a clear picture of all available alternatives. This classic view reduces the solution to computing the score of each alternative, producing a ranking, and choosing the one that maximizes this value. As most of the real-world decision making scenarios take place in dynamic environments, involving multiple alternatives which usually have conflicting attributes, classic MCDM models do not really satisfy their requirements, especially when we deal with multiple groups in the decision process. Dynamic MCDM models are more appropriate to solve real decision problems, since they cater for the impact of time within the decision making process. In this paper, we investigate an MCDM model for group decision making, by taking into consideration its dynamic perspective. A case-study about hotel ranking, involving multi-groups in the decision making process is sketched to illustrate the approach.