Determining the weights of criteria in the ELECTRE type methods with a revised Simos' procedure

Abstract In a decision aiding context, knowing the preferences of the Decision Maker (DM) and determining weights of criteria are very hard questions. Several methods can be used to give an appropriate value to the weights of criteria. J. Simos proposed a very simple procedure, using a set of cards, allowing to determine indirectly numerical values for weights. The purpose of this paper is first to explain why the above method needs to be revised, and second, the revised version we propose. This new version takes into account a new kind of information from the DM and changes certain computing rules of the former method. A software has been implemented based on the revised Simos' procedure whose main features are presented in this paper. The new method has been applied to different real-life cases (public transportation problems, water resources problems, environment problems, etc); it proved to be successful.

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