The main variants of multicriteria analysis which use outranking are:

ELECTRE I - This variant functions with an agreement index and a disagreement index, presented in the form of scores. A disagreement threshold (a veto) is introduced for all the criteria. The outranking and veto thresholds are of the franc type. The software processes a situation in which the best measure(s) must chosen, for example a situation in which the aim is to identify best practice.

ELECTRE TRI - This variant serves to sort measures into different categories, for example, the most successful measures, measures which have no significant impact and intermediate measures.

ELECTRE II produces a ranking of measures, from the most successful to the least successful. Outranking and veto thresholds are of the franc type.

ELECTRE III also performs a classification, but introduces vague outranking relationships.

PROMETHEE uses only an index of agreement and introduces progressive outranking.

 

For more information, see the annexed bibliography: Vincke 1989.