期刊名称:Documents de Travail du Centre d'Economie de la Sorbonne
印刷版ISSN:1955-611X
出版年度:2015
出版社:Centre d'Economie de la Sorbonne
摘要:The GAI (Generalized Additive Independence) model proposed by Fishburn is a generalization of the additive utility model, which need not satisfy mutual preferential independence. Its great generality makes however its application and study difficult. We consider a significant subclass of GAI models, namely the discrete 2-additive GAI models, and provide for this class a decomposition into nonnegative monotone terms. This decomposition allows a reduction from exponential to quadratic complexity in any optimization problem involving discrete 2-additive models, making them usable in practice.