Author
Dias, Luis
Mousseau, Vincent
Type
Rapport
Item number of pages
47
Abstract (EN)
This document is the User Manual for the decision support software IRIS - Interactive
Robustness analysis and parameters' Inference for multicriteria Sorting problems (Version 2). This
tool has been built to support the assignment of actions (alternatives, projects, candidates) described
by their evaluation (performance) at multiple dimensions (criteria) to a set of predefined ordered
categories, using a pessimistic concordance-only variant of the ELECTRE TRI method. Rather than
demanding precise values for the ELECTRE TRI parameters, IRIS allows to enter constraints on
these values, namely assignment examples that it tries to restore. It adds a module to identify the
source of inconsistency among the constraints when it is not possible to respect all of them at the
same time. On the other hand, if the constraints are compatible with multiple assignments for the
actions, IRIS allows to draw robust conclusions by indicating the range of assignments (for each
action) that do not contradict any constraint.