Handling effects of reinforced preference and counter-veto in credibility of outrankingReport as inadecuate

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1 LAMSADE - Laboratoire d-analyse et modélisation de systèmes pour l-aide à la décision 2 Institut d-Informatique

Abstract : The aim of this paper is to generalize the way of computing the credibility of outranking in a multiple criteria aggregation procedure, in view of taking into account two new ef-fects called reinforced preference and counter-veto. These effects concern only those cri-teria for which, as soon as action a is -judged very strongly preferred- to action b, one wishes that the credibility of outranking of a over b is greater than that for the case where all things equal elsewhere the preference is not -judged very strong-. To achieve this goal, we propose two complementary ways. The first one involves a reinforced pref-erence threshold which affects the concordance degree, and the second one involves a counter-veto threshold which affects the insertion of discordance degree in the calcula-tion of the credibility of outranking. The introduction of these two new effects remains compatible with the handling of purely ordinal preference scales. The resulting new in-dex of the credibility of outranking can be used, in particular, in ELECTRE method

Keywords : Dis-cordance Decision support Multiple criteria analysis Outranking Concordance Dis-cordance.

Author: Bernard Roy - Roman Slowinski -

Source: https://hal.archives-ouvertes.fr/


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