Author
Mousseau, Vincent
Slowinski, Roman
Type
Article accepté pour publication ou publié
Abstract (EN)
Given a finite set of alternatives, the sorting problem consists in the assignment of each
alternative to one of the pre-defined categories. In this paper, we are interested in multiple criteria
sorting problems and, more precisely, in the existing method ELECTRE TRI. This method requires
the elicitation of parameters (weights, thresholds, category limits,...) in order to construct the Decision
Maker’s (DM) preference model. A direct elicitation of these parameters being rather difficult, we
proceed to solve this problem in a way that requires from the DM much less cognitive effort. We
elicit these parameters indirectly using holistic information given by the DM through assignment
examples.We propose an interactive approach that infers the parameters of an ELECTRE TRI model
from assignment examples. The determination of an ELECTRE TRI model that best restitutes the
assignment examples is formulated through an optimization problem. The interactive aspect of this
approach lies in the possibility given to the DM to revise his/her assignment examples and/or to give additional information before the optimization phase restarts.