ExpTime Tableaux Algorithm for Contextualized \(\mathcal{ALC}\)

Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8175)


Contextualized Knowledge Repository (CKR) is a DL-based framework for representation and reasoning with context dependent knowledge. It addresses the widely recognized need for contextualization of the Semantic Web data sources. Reasoning with CKR is possible thanks to a reduction to standard DL, and more recently a NExpTime tableaux algorithm was introduced for \(\mathcal{ALC}\)-based CKR. In this paper we present an ExpTime tableaux algorithm for \(\mathcal{ALC}\)-based CKR. The algorithm not only formally defines a tableaux decision procedure with optimal complexity, it is also presented in a form that can be effectively applied in practice employing a suitable rule application strategy together with node caching.


Description Logic Node Label Negation Normal Form Winner Team Tableau Algorithm 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.Fondazione Bruno KesslerTrentoItaly
  2. 2.FMFIComenius UniversityBratislavaSlovakia

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