| Titre : | Divisor-based biproportional apportionment in electoral systems : A real-life benchmark study (2010) |
| Auteurs : | Sebastian Maier, Auteur ; Petur Zachariassen, Auteur ; Martin Zachariasen, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Management science (Vol. 56 N° 2, Fevrier 2010) |
| Article en page(s) : | pp. 373-387 |
| Note générale : | Management |
| Langues : | Anglais |
| Index. décimale : | 658 (Organisation des entreprises. Techniques du commerce) |
| Tags : | Electoral systems Divisor-based biproportional apportionment Computer simulation |
| Résumé : | Biproportional apportionment methods provide two-way proportionality in electoral systems where the electoral region is subdivided into electoral districts. The problem is to assign integral values to the elements of a matrix that are proportional to a given input matrix, and such that a set of row- and column-sum requirements are fulfilled. In a divisor-based method for biproportional apportionment, the problem is solved by computing appropriate row and column divisors, and by rounding the quotients. We present a comprehensive experimental evaluation of divisor-based biproportional apportionment in an electoral system context. By performing experiments on real-life benchmark instances (election data with multimember districts), we evaluate the general quality of divisor-based apportionments with respect to, e.g., deviation from quota, reversal orderings, and occurrences of ties. For example, we studied the frequency in which a party with a higher vote count in a district ended up with fewer seats in that district. |
| DEWEY : | 658 |
| ISSN : | 0025-1909 |
| En ligne : | http://mansci.journal.informs.org/content/56/2.toc |
