Hydrowl: A Hybrid Query Answering System for OWL 2 DL Ontologies

This system description paper introduces the OWL 2 query answering system Hydrowl. Hydrowl is based on novel hybrid techniques which in order to compute the query answers combine at run-time a reasoner ans1 supporting a (tractable) fragment of OWL 2 (e.g., OWL 2 QL and OWL 2 RL) with a fully-fledged...

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Bibliographic Details
Published inWeb Reasoning and Rule Systems pp. 230 - 238
Main Author Stoilos, Giorgos
Format Book Chapter
LanguageEnglish
Published Cham Springer International Publishing 2014
SeriesLecture Notes in Computer Science
Subjects
Conjunctive Query
Description Logic
Query Answer
Query Answering
SPARQL Query
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ISBN9783319111124
3319111124
ISSN0302-9743
1611-3349
DOI10.1007/978-3-319-11113-1_20

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Summary:This system description paper introduces the OWL 2 query answering system Hydrowl. Hydrowl is based on novel hybrid techniques which in order to compute the query answers combine at run-time a reasoner ans1 supporting a (tractable) fragment of OWL 2 (e.g., OWL 2 QL and OWL 2 RL) with a fully-fledged OWL 2 DL reasoner ans2. The motivation is that if most of the (query answering) work is delegated to the (usually) very scalable system ans1 while the interaction with ans2 is kept to a bare minimum, then we can possibly provide with scalable query answering even over expressive fragments of OWL 2 DL. We discuss the system’s architecture and we present an overview of the techniques used. Finally, we present some first encouraging experimental results.
ISBN:9783319111124
3319111124
ISSN:0302-9743
1611-3349
DOI:10.1007/978-3-319-11113-1_20