Conjunctive Query Optimization in OWL2-DL

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F11%3A00181758" target="_blank" >RIV/68407700:21230/11:00181758 - isvavai.cz</a>
Result on the web
<a href="http://www.springerlink.com/content/x571113660m36144" target="_blank" >http://www.springerlink.com/content/x571113660m36144</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/978-3-642-23091-2_18" target="_blank" >10.1007/978-3-642-23091-2_18</a>

Result language
angličtina
Original language name
Conjunctive Query Optimization in OWL2-DL
Original language description
Conjunctive query answering is becoming a very important task on the Semantic Web as the adoption of SPARQL query language increases. There is considerable work done in the area of optimizing conjunctive query answering for RDF and OWL2-DL ontologies, inthe latter case namely for queries without undistinguished variables. However, there has not been much emphasis on how to handle queries with both distinguished and undistinguished variables efficiently. In this paper, we present a novel algorithm for answering conjunctive queries over OWL2-DL ontologies with undistinguished variables efficiently. These optimizations are implemented in the Pellet query engine and our experimental evaluation shows that the new optimization improves the query performancesignificantly.
Czech name
—
Czech description
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Project
<a href="/en/project/DF11P01OVV002" target="_blank" >DF11P01OVV002: Defects in immovable cultural heritage objects: a knowledge-based system for analysis, intervention planning and prevention</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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