On (anti) conditional independence in Dempster-Shafer theory.

Título inglés	On (anti) conditional independence in Dempster-Shafer theory.
Título español	Independencia (anti) condicional en la teoría de Dempster-Shafer.
Autor/es	Klopotek, Mieczyslaw A.
Organización	Inst. Comput. Sci. Polish Acad. Sci., Varsovia, Polonia
Revista	1134-5632
Publicación	1998, 5 (1): 69-89, 11 Ref.
Tipo de documento	articulo
Idioma	Inglés
Resumen inglés	This paper verifies a result of [9] concerning graphoidal structure of Shenoy's notion of independence for Dempster-Shafer theory belief functions. Shenoy proved that his notion of independence has graphoidal properties for positive normal valuations. The requirement of strict positive normal valuations as prerequisite for application of graphoidal properties excludes a wide class of DS belief functions. It excludes especially so-called probabilistic belief functions. It is demonstrated that the requirement of positiveness of valuation may be weakened in that it may be required that commonality function is non-zero for singleton sets instead, and the graphoidal properties for independence of belief function variables are then preserved. This means especially that probabilistic belief functions with all singleton sets as focal points possess graphoidal properties for independence.
Clasificación UNESCO	120304
Palabras clave español	Inteligencia artificial ; Lógica difusa ; Intervalo de confianza ; Teorías probabilistas de seguridad ; Medida de incertidumbre ; Métodos gráficos
Código MathReviews	MR1632759
Código Z-Math	Zbl 0946.68133
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