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Statements

Subject Item
n2:RIV%2F68407700%3A21230%2F11%3A00181758%21RIV12-MK0-21230___
rdf:type
n4:Vysledek skos:Concept
rdfs:seeAlso
http://www.springerlink.com/content/x571113660m36144
dcterms: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, in the 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 performance significantly. 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, in the 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 performance significantly.
dcterms:title
Conjunctive Query Optimization in OWL2-DL Conjunctive Query Optimization in OWL2-DL
skos:prefLabel
Conjunctive Query Optimization in OWL2-DL Conjunctive Query Optimization in OWL2-DL
skos:notation
RIV/68407700:21230/11:00181758!RIV12-MK0-21230___
n4:predkladatel
n5:orjk%3A21230
n6:aktivita
n19:P n19:Z
n6:aktivity
P(DF11P01OVV002), Z(MSM6840770038)
n6:dodaniDat
n11:2012
n6:domaciTvurceVysledku
n9:8325529 n9:7212925
n6:druhVysledku
n15:D
n6:duvernostUdaju
n25:S
n6:entitaPredkladatele
n21:predkladatel
n6:idSjednocenehoVysledku
191683
n6:idVysledku
RIV/68407700:21230/11:00181758
n6:jazykVysledku
n13:eng
n6:klicovaSlova
OWL2-DL; conjunctive query; optimization
n6:klicoveSlovo
n10:optimization n10:conjunctive%20query n10:OWL2-DL
n6:kontrolniKodProRIV
[0DEA88806217]
n6:mistoKonaniAkce
Toulouse
n6:mistoVydani
Berlin
n6:nazevZdroje
Database and Expert Systems Applications
n6:obor
n22:IN
n6:pocetDomacichTvurcuVysledku
2
n6:pocetTvurcuVysledku
2
n6:projekt
n24:DF11P01OVV002
n6:rokUplatneniVysledku
n11:2011
n6:tvurceVysledku
Kouba, Zdeněk Křemen, Petr
n6:typAkce
n14:WRD
n6:zahajeniAkce
2011-08-29+02:00
n6:zamer
n16:MSM6840770038
s:issn
0302-9743
s:numberOfPages
15
n20:doi
10.1007/978-3-642-23091-2_18
n7:hasPublisher
Springer-Verlag
n12:isbn
978-3-642-23090-5
n18:organizacniJednotka
21230