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research-article

Possibilistic nested logic programs and strong equivalence

Published: 01 April 2015 Publication History

Abstract

In this paper, the class of possibilistic nested logic programs is introduced. These possibilistic logic programs allow us to use nested expressions in the bodies and heads of their rules. By considering a possibilistic nested logic program as a possibilistic theory, a construction of a possibilistic logic programing semantics based on answer sets for nested logic programs and the proof theory of possibilistic logic is defined. In order to define a general method for computing the possibilistic answer sets of a possibilistic nested program, the idea of equivalence between possibilistic nested programs is explored. By considering properties of equivalence between possibilistic programs, a process of transforming a possibilistic nested logic program into a possibilistic disjunctive logic program is defined. Given that our approach is an extension of answer set programming, we also explore the concept of strong equivalence between possibilistic nested logic programs. To this end, we introduce the concept of poss SE-models. Therefore, we show that two possibilistic nested logic programs are strong equivalents whenever they have the same poss SE-models.The expressiveness of the possibilistic nested logic programs is illustrated by a scenario from the medical domain. In particular, we exemplify how possibilistic nested logic programs are expressive enough for capturing medical guidelines which are pervaded by vagueness and qualitative information.

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  • (2018)A dialogue-based approach for dealing with uncertain and conflicting information in medical diagnosisAutonomous Agents and Multi-Agent Systems10.5555/3288249.328826332:6(861-885)Online publication date: 1-Nov-2018

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Published In

cover image International Journal of Approximate Reasoning
International Journal of Approximate Reasoning  Volume 59, Issue C
April 2015
105 pages

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Elsevier Science Inc.

United States

Publication History

Published: 01 April 2015

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  • (2018)A dialogue-based approach for dealing with uncertain and conflicting information in medical diagnosisAutonomous Agents and Multi-Agent Systems10.5555/3288249.328826332:6(861-885)Online publication date: 1-Nov-2018

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