License: Creative Commons Attribution 3.0 Unported license (CC BY 3.0)
When quoting this document, please refer to the following
DOI: 10.4230/OASIcs.ICLP.2016.6
URN: urn:nbn:de:0030-drops-67310
URL: http://dagstuhl.sunsite.rwth-aachen.de/volltexte/2016/6731/
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Béatrix, Christopher ; Lefèvre, Claire ; Garcia, Laurent ; Stéphan, Igor

Justifications and Blocking Sets in a Rule-Based Answer Set Computation

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Abstract

Notions of justifications for logic programs under answer set semantics have been recently studied for atom-based approaches or argumentation approaches. The paper addresses the question in a rule-based answer set computation: the search algorithm does not guess on the truth or falsity of an atom but on the application or non application of a non monotonic rule. In this view, justifications are sets of ground rules with particular properties. Properties of these justifications are established; in particular the notion of blocking set (a reason incompatible with an answer set) is defined, that permits to explain computation failures. Backjumping, learning, debugging and explanations are possible applications.

BibTeX - Entry

@InProceedings{batrix_et_al:OASIcs:2016:6731,
  author =	{Christopher B{\'e}atrix and Claire Lef{\`e}vre and Laurent Garcia and Igor St{\'e}phan},
  title =	{{Justifications and Blocking Sets in a Rule-Based Answer Set Computation}},
  booktitle =	{Technical Communications of the 32nd International Conference on Logic Programming (ICLP 2016)},
  pages =	{6:1--6:15},
  series =	{OpenAccess Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-007-1},
  ISSN =	{2190-6807},
  year =	{2016},
  volume =	{52},
  editor =	{Manuel Carro and Andy King and Neda Saeedloei and Marina De Vos},
  publisher =	{Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{http://drops.dagstuhl.de/opus/volltexte/2016/6731},
  URN =		{urn:nbn:de:0030-drops-67310},
  doi =		{10.4230/OASIcs.ICLP.2016.6},
  annote =	{Keywords: Answer Set Programming, Justification, Rule-based Computation}
}

Keywords: Answer Set Programming, Justification, Rule-based Computation
Collection: Technical Communications of the 32nd International Conference on Logic Programming (ICLP 2016)
Issue Date: 2016
Date of publication: 11.11.2016

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