Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.19/2591
Título: Levels of incomplete informationin group decision models – A comprehensive simulation study
Autor: Vetschera, Rudolf
Sarabando, Paula
Dias, Luis
Palavras-chave: Additive group utility
Incomplete information
Ordinal preference information
Independence of irrelevant alternatives
Data: 2014
Resumo: We present a comprehensive computational study on the effects of providing different forms of incomplete preference information in additive group decision models. We consider different types of information on individual preferences, and on weights of the group members, and study their effects on conclusiveness, ef fi ciency and fairness of outcomes at the group level. Furthermore, we analyze possible violations of the axiom of independence of irrelevant alternatives (IIA) as well as the impact of problem characteristics, in particular initial agreement between group members. Our results indicate that providing information in the form of a ranking of differences between consecutive alternatives comes close to providing exact cardinal preference information in several outcome dimensions. However, group decision procedures based on incomplete preference information also show a significant amount of violations of the IIA axiom.
Peer review: yes
URI: http://hdl.handle.net/10400.19/2591
DOI: 10.1016/j.cor.2014.05.021
Aparece nas colecções:ESTGV - DMAT - Artigos publicados em revista científica (Indexados à ISI)

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