Comparer des méthodes

	Approche de Priorité Ordinale	Processus d'analyse hiérarchique
Domaine	Prise de décision	Prise de décision
Famille	MCDM	MCDM
Année d'origine	1977	1980
Auteur d'origine	Ward Edwards and collaborators	Saaty, T. L.
Type	Ordinal ranking-based weight derivation	Pairwise comparison (eigenvalue)
Source fondatrice	Edwards, W. (1977). Use of multiattribute utility measurement for social decision making. In D. E. Bell, R. L. Keeney, & H. Raiffa (Eds.), Conflicting objectives in decisions (pp. 247-307). Wiley.	Saaty, T. L. (1980). The Analytic Hierarchy Process: Planning, Priority Setting, Resource Allocation. McGraw-Hill, New York ISBN: 978-0070543713
Alias	OPA, Ordinal Priority	—
Apparentées	4	8
Résumé	The Ordinal Priority Approach (OPA) is a family of methods that derive criteria weights directly from ordinal rankings rather than cardinal (numerical) preferences. Instead of asking decision-makers to assign exact weight values or ratio comparisons, OPA asks only: which criterion is most important, which is second, etc. The method then converts this ordinal ranking into numerical weights using geometric or statistical formulas.	AHP (Analytic Hierarchy Process) is a weight subjective multi-criteria decision-making (MCDM) method introduced by Saaty, T. L. in 1980. It turns a decision matrix of alternatives scored on multiple criteria into a structured, reproducible result.