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2016 | OriginalPaper | Buchkapitel

Iteratively-Supported Formulas and Strongly Supported Models for Kleene Answer Set Programs

(Extended Abstract)

verfasst von : Patrick Doherty, Jonas Kvarnström, Andrzej Szałas

Erschienen in: Logics in Artificial Intelligence

Verlag: Springer International Publishing

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Abstract

In this extended abstract, we discuss the use of iteratively-supported formulas (ISFs) as a basis for computing strongly-supported models for Kleene Answer Set Programs (ASP\(^{K}\)). ASP\(^{K}\) programs have a syntax identical to classical ASP programs. The semantics of ASP\(^{K}\) programs is based on the use of Kleene three-valued logic and strongly-supported models. For normal ASP\(^{K}\) programs, their strongly supported models are identical to classical answer sets using stable model semantics. For disjunctive ASP\(^{K}\) programs, the semantics weakens the minimality assumption resulting in a classical interpretation for disjunction. We use ISFs to characterize strongly-supported models and show that they are polynomially bounded.

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Fußnoten
1
Note that minimality is sometimes not required or may even be undesirable [2, 3, 15, 17], e.g., in the context of programs that use disjunctive rules.
 
2
We always remove double strong negations using \(\lnot (\lnot \ell )\mathop {=}\limits ^{\mathrm {def}}\ell \).
 
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Metadaten
Titel
Iteratively-Supported Formulas and Strongly Supported Models for Kleene Answer Set Programs
verfasst von
Patrick Doherty
Jonas Kvarnström
Andrzej Szałas
Copyright-Jahr
2016
DOI
https://doi.org/10.1007/978-3-319-48758-8_36

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