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On the Classification and Aggregation of Hierarchies with Different Constitutive Elements

Dinu L.P.

Fundamenta Informaticae

2003

Vol. 55, nr 1

39-50

In this paper we present an aggregation method which can be applied to classifications having different vocabularies. The method uses the rank distance (Dinu, 2003), a metric which measures the similarity between two hierarchies based on the ranks of objects. We define the aggregation of n hierarchies as the classification for which the sum of distances from it to each of the n hierarchies is minimal. We study some of his rationality properties and propose some open problems.