On Warranted Inference in Possibilistic Defeasible Logic Programming

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On Warranted Inference in Possibilistic Defeasible Logic Programming
Abstract. Possibilistic Defeasible Logic Programming (P-DeLP) is a logic programming language which combines features from argumentation theory and logic programming, incorporating as well the treatment of possibilistic uncertainty and fuzzy knowledge at object-language level. Defeasible argumentation in general and P-DeLP in particular provide a way of modelling non-monotonic inference. From a logical viewpoint, capturing defeasible inference relationships for modelling argument and warrant is particularly important, as well as the study of their logical properties. This paper analyzes a non-monotonic operator for P-DeLP which models the expansion of a given program P by adding new weighed facts associated with warranted literals. Different logical properties are studied and contrasted with a traditional SLD-based Horn logic, providing useful comparison criteria that can be extended and applied to other argumentation frameworks. Keywords. argumentation, logic programming, uncertainty,...
Carlos Iván Chesñevar, Guillermo Ric
Added 26 Jun 2010
Updated 26 Jun 2010
Type Conference
Year 2005
Where CCIA
Authors Carlos Iván Chesñevar, Guillermo Ricardo Simari, Lluis Godo, Teresa Alsinet
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