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Research highlight : QUERY CONTAINMENT IN DESCRIPTION LOGICS RECONSIDERED
QUERY CONTAINMENT IN DESCRIPTION LOGICS RECONSIDERED
2 April 2012

Meghyn Bienvenu, Carsten Lutz, and Frank Wolter, in International Conference on Principles of Knowledge Representation and Reasoning (KR) 2012
While query answering in the presence of description logic (DL) ontologies is a well-studied problem, questions of static analysis such as query containment and query optimization have received less attention. In this paper, we study a rather general version of query containment that, unlike the classical version, cannot be reduced to query answering. First, we allow a restriction to be placed on the vocabulary used in the instance data, which can result in shorter equivalent queries; and second, we allow each query its own ontology rather than assuming a single ontology for both queries, which is crucial in applications to versioning and modularity. We also study global minimization of queries in the presence of DL ontologies, which is more subtle than for classical databases as minimal queries need not be isomorphic.



Keyword
  ° Ontologies
  ° Logic
  ° Complexity
  ° Automated reasoning

Group
  ° Artificial Intelligence and Inference Systems

Contact
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