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2015 | OriginalPaper | Buchkapitel

Extending the Notion of Preferred Explanations for Quantified Constraint Satisfaction Problems

verfasst von : Deepak Mehta, Barry O’Sullivan, Luis Quesada

Erschienen in: Theoretical Aspects of Computing - ICTAC 2015

Verlag: Springer International Publishing

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Abstract

The Quantified Constraint Satisfaction Problem (QCSP) is a generalization of classical constraint satisfaction problem in which some variables can be universally quantified. This additional expressiveness can help model problems in which a subset of the variables take value assignments that are outside the control of the decision maker. Typical examples of such domains are game-playing, conformant planning and reasoning under uncertainty. In these domains decision makers need explanations when a QCSP does not admit a winning strategy. We extend our previous approach to defining preferences amongst the requirements of a QCSP by considering more general relaxation schemes. We also present key complexity results on the hardness of finding preferred conflicts of QCSPs under this extension of the notion of preference. This paper unifies work from the fields of constraint satisfaction, explanation generation, and reasoning under preferences and uncertainty.

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Fußnoten
1
A relaxation of a requirement is also a requirement.
 
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Metadaten
Titel
Extending the Notion of Preferred Explanations for Quantified Constraint Satisfaction Problems
verfasst von
Deepak Mehta
Barry O’Sullivan
Luis Quesada
Copyright-Jahr
2015
DOI
https://doi.org/10.1007/978-3-319-25150-9_19