Abstract
In general, it is difficult to articulate the decision-maker's (DM) preference structure, specially in taking into account several criteria. Most synthetical approaches (single synthetical criterion approach, synthetical outranking approach,…) are based on some a priori information. In this paper, we attempt to analyze such a structure through a descriptive approach. The idea is to explain the global preferences revealed by the DM from pairwise comparisons of reference alternatives. A disaggregation — aggregation interactive procedure like in PREFCALC is used in ELECCALC, which enables a DM to assess the parameters of ELECTRE II.
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