A mathematical treatment of defeasible reasoning and its implementation
Artificial Intelligence
General patterns in nonmonotonic reasoning
Handbook of logic in artificial intelligence and logic programming (vol. 3)
Handbook of logic in artificial intelligence and logic programming (vol. 3)
Foundations of logic programming
Principles of knowledge representation
ACM Computing Surveys (CSUR)
A Complete Calcultis for Possibilistic Logic Programming with Fuzzy Propositional Variables
UAI '00 Proceedings of the 16th Conference on Uncertainty in Artificial Intelligence
Defeasible logic programming: an argumentative approach
Theory and Practice of Logic Programming
A logic programming framework for possibilistic argumentation with vague knowledge
UAI '04 Proceedings of the 20th conference on Uncertainty in artificial intelligence
An axiomatic account of formal argumentation
AAAI'05 Proceedings of the 20th national conference on Artificial intelligence - Volume 2
ECSQARU'05 Proceedings of the 8th European conference on Symbolic and Quantitative Approaches to Reasoning with Uncertainty
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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.