How to aggregate Top-lists: Approximation algorithms via scores and average ranks

5 Nov 2018Claire MathieuSimon Mauras

A top-list is a possibly incomplete ranking of elements: only a subset of the elements are ranked, with all unranked elements tied for last. Top-list aggregation, a generalization of the well-known rank aggregation problem, takes as input a collection of top-lists and aggregates them into a single complete ranking, aiming to minimize the number of upsets (pairs ranked in opposite order in the input and in the output)... (read more)

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