Meaningful aggregation functions mapping ordinal scales into an ordinal scale: a state of the art

Details Meaningful aggregation functions mapping ordinal scales into an ordinal scale: a state of the art Meaningful aggregation functions mapping ordinal scales into an ordinal scale: a state of the art

2009-03-13

arxiv.org/abs/0903.2434v1

Aequationes Mathematicae 77 (3) (2009) 207-236

Mathematics

Functional Analysis

Scientific paper

We present an overview of the meaningful aggregation functions mapping ordinal scales into an ordinal scale. Three main classes are discussed, namely order invariant functions, comparison meaningful functions on a single ordinal scale, and comparison meaningful functions on independent ordinal scales. It appears that the most prominent meaningful aggregation functions are lattice polynomial functions, that is, functions built only on projections and minimum and maximum operations.

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