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Verfasst von:Lambrecht, Marco [VerfasserIn]   i
Titel:Independence of alternatives in ranking models
Verf.angabe:Marco Lambrecht
Ausgabe:This version: July 14, 2020
Verlagsort:Heidelberg
Verlag:University of Heidelberg, Department of Economics
E-Jahr:2020
Jahr:August 2020
Umfang:1 Online-Ressource (16 Seiten)
Illustrationen:Illustrationen
Gesamttitel/Reihe:Discussion paper series / University of Heidelberg, Department of Economics ; no. 688
Abstract:When Luce (1959) introduced his Choice Axiom, this raised immediate criticism by Debreu (1960), pointing out inconsistencies when items are ranked from inferior to superior (instead of ranking them from superior to inferior). As recently shown by Breitmoser (2019), Luce's Independence of Ir- relevant Alternatives (IIA) is equivalent to Luce's Choice Axiom when positivity holds. This fact seems to have escaped attention so far and might suggest that Debreu's critique also applies to the notion of IIA, which is widely used in the literature. Furthermore, this notion could potentially be intuitively misleading, as the consequences of this axiom seem to be different than the name suggests. This might spill over to the intuitive interpretation of theoretical results that build on this axiom. This paper motivates the introduction of the notion of Independece of Alter- natives (IoA) in the context of ranking models. IoA postulates a property of independence which seems intuitively reasonable (as it exactly captures what Luce himself describes when speaking about IIA), but does not exclusively hold in models where Luce's Choice Axiom applies. Assuming IoA, expected ranks in the ranking of multiple alternatives can be determined from pairwise comparisons. The result holds in many models which do not satisfy IIA (e.g. certain Thurstone V models, Thurstone (1927)), can significantly simplify the calculation of expected ranks in practice and potentially facilitate analytic methods that build on more general approaches to model the ranking of multiple alternatives.
DOI:doi:10.11588/heidok.00028849
URL:kostenfrei: Verlag: http://archiv.ub.uni-heidelberg.de/volltextserver/28849/2/Lambrecht_2020_dp688.pdf
 kostenfrei: Resolving-System: https://doi.org/10.11588/heidok.00028849
 kostenfrei: Resolving-System: http://hdl.handle.net/10419/235011
 kostenfrei: Volltext: https://nbn-resolving.org/urn:nbn:de:bsz:16-heidok-288499
 DOI: https://doi.org/10.11588/heidok.00028849
 10419/235011
URN:urn:nbn:de:bsz:16-heidok-288499
Datenträger:Online-Ressource
Sprache:eng
Sach-SW:Ranking models
 IIA
 IoA
 Luce's Choice Axiom
 Thurstone V
Form-SW:Graue Literatur
K10plus-PPN:1728973767
Verknüpfungen:→ Übergeordnete Aufnahme
 
 
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