EXTRA - AN EXPERT SYSTEM FOR MULTICRITERIA DECISION-MAKING

This paper presents an expert system approach to a classical decision making problem; aiding in the selection of a preferred action from a list of alternatives evaluated on several criteria. In outranking methods, the non-compensatory aggregation procedure uses an importances relation on criteria subsets. In EXTRA, the decision maker's knowledge on this importance relation are treated purely formally, without converting them into weights. Therefore each outranking relation may be explained in terms of the input informations and of some simple axioms. Finally, the multicriteria analysis process is illustrated and studied on a real world problem: the media selection.