What is Electre?

ELECTRE (Elimination Et Choix Traduisant la Réalité) is a family of multi-criteria decision analysis (MCDA) methods that originated in Europe in the mid-1960s. These methods are designed to help decision-makers choose the best alternative from a set of possible options when faced with conflicting criteria. ELECTRE methods use pairwise comparisons of alternatives based on concordance and discordance principles. Concordance measures the degree to which one alternative is better than another based on a majority of criteria, while discordance measures the degree to which one alternative is significantly worse than another on at least one criterion. These methods are often used in situations involving strategic planning, resource allocation, and project selection.