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Influence diagrams with super value nodes involving imprecise information
Authors:Miguel Ló  pez-Dí  az,Luis J. Rodrí  guez-Muñ  iz
Affiliation:Departamento de Estadística e I.O. y D.M., Facultad de Ciencias, Universidad de Oviedo, C/Calvo Sotelo s/n, 33007 Oviedo, Asturias, Spain
Abstract:
The concept of super value nodes was established to allow dynamic programming to be performed within the theory of influence diagrams and to reduce the computational complexity in solving problems by means of influence diagrams. This paper is focused on how influence diagrams with super value nodes are affected by the presence of imprecise information. We analyze how to reduce the complexity when evaluating an influence diagram in this framework by modelling these kinds of nodes and random magnitudes in terms of fuzzy random variables. Finally, an applied example of the theoretical results is developed.
Keywords:Decision support systems   Fuzzy expected value   Fuzzy random variable   Influence diagram   Super value node
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