Axiomatization of an importance index for Generalized Additive Independence models

Abstract : We consider MultiCriteria Decision Analysis models which are defined over discrete attributes, taking a finite number of values. We do not assume that the model is monotonically increasing with respect to the attributes values. Our aim is to define an importance index for such general models, encompassing Generalized-Additive Independence models as particular cases. They can be seen as being equivalent to k-ary games (multichoice games). We show that classical solutions like the Shapley value are not suitable for such models, essentially because of the efficiency axiom which does not make sense in this context. We propose an importance index which is a kind of average variation of the model along the attributes. We give an axiomatic characterization of it.
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Submitted on : Friday, December 8, 2017 - 6:09:37 PM
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Mustapha Ridaoui, Michel Grabisch, Christophe Labreuche. Axiomatization of an importance index for Generalized Additive Independence models. 2017. ⟨halshs-01659796⟩

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