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arXiv · 1011.5894

An Optimization for Reasoning with Forest Logic Programs

Cristina Feier·Stijn Heymans
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Abstract

Open Answer Set Programming (OASP) is an attractive framework for integrating ontologies and rules. In general OASP is undecidable. In previous work we provided a tableau-based algorithm for satisfiability checking w.r.t. forest logic programs, a decidable fragment of OASP, which has the forest model property. In this paper we introduce an optimized version of that algorithm achieved by means of a knowledge compilation technique. So-called unit completion structures, which are possible building blocks of a forest model, in the form of trees of depth 1, are computed in an initial step of the algorithm. Repeated computations are avoided by using these structures in a pattern-matching style when constructing a model. Furthermore we identify and discard redundant unit completion structures: a structure is redundant if there is another structure which can always replace the original structure in a forest model.

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Cristina Feier, Stijn Heymans. 2010-11-25. An Optimization for Reasoning with Forest Logic Programs. https://arxiv.org/abs/1011.5894

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