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- W3169062656 abstract "Preference aggregation and in particular ranking aggregation are mainly studied by the field of social choice theory but extensively applied in a variety of contexts. Among the most prominent methods for ranking aggregation, the Kemeny method has been proved to be the only one that satisfies some desirable properties such as neutrality, consistency and the Condorcet condition at the same time. Unfortunately, the problem of finding a Kemeny ranking is NP-hard, which prevents practitioners from using it in real-life problems. The state of the art of exact algorithms for the computation of the Kemeny ranking experienced a major boost last year with the presentation of an algorithm that provides searching time guarantee up to 13 alternatives. In this work, we propose an enhanced version of this algorithm based on pruning the search space when some Condorcet properties hold. This enhanced version greatly improves the performance in terms of runtime consumption." @default.
- W3169062656 created "2021-06-22" @default.
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- W3169062656 date "2021-06-15" @default.
- W3169062656 modified "2023-10-14" @default.
- W3169062656 title "Reducing the Computational Time for the Kemeny Method by Exploiting Condorcet Properties" @default.
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- W3169062656 doi "https://doi.org/10.3390/math9121380" @default.
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