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	Pendekatan Prioritas Ordinal	ELECTRE I	PROMETHEE II
Bidang	Pembuatan Keputusan	Pembuatan Keputusan	Pembuatan Keputusan
Keluarga	MCDM	MCDM	MCDM
Tahun asal	1977	1968	1986
Pengasas	Ward Edwards and collaborators	Roy, B.	Brans, J. P., Vincke, Ph., Mareschal, B.
Jenis	Ordinal ranking-based weight derivation	Concordance–discordance (crisp outranking)	Preference function (net flow)
Sumber perintis	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.	Roy, B. (1968). Classement et choix en présence de points de vue multiples (la méthode ELECTRE). Revue Française d'Informatique et de Recherche Opérationnelle	Brans, J. P., Vincke, Ph., Mareschal, B. (1986). How to select and how to rank projects: The PROMETHEE method. European Journal of Operational Research
Alias	OPA, Ordinal Priority	—	—
Berkaitan	4	8	8
Ringkasan	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.	ELECTRE (ELECTRE I — ELimination Et Choix Traduisant la REalité) is a outranking multi-criteria decision-making (MCDM) method introduced by Roy, B. in 1968. It turns a decision matrix of alternatives scored on multiple criteria into a structured, reproducible result.	PROMETHEE (PROMETHEE II — Preference Ranking Organisation METHod for Enrichment of Evaluations) is a outranking multi-criteria decision-making (MCDM) method introduced by Brans, J. P., Vincke, Ph., Mareschal, B. in 1986. It turns a decision matrix of alternatives scored on multiple criteria into a structured, reproducible result.