Aggregate queries over ontologies

Diego Calvanese, Evgeny Kharlamov, Werner Nutt, Camilo Thorne

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

48 Scopus citations

Abstract

Answering queries over ontologies is an important issue for the Semantic Web. Aggregate queries were widely studied for relational databases but almost no results are known for aggregate queries over ontologies. In this work we investigate the latter problem. We propose syntax and semantics for epistemic aggregate queries over ontologies and study query answering for MAX, MIN, COUNT, CNTD, SUM, AVG queries for the ontology language DL-LiteA.

Original languageEnglish
Title of host publicationProc. of the 2nd International Workshop on Ontologies and Information Systems for the Semantic Web, ONISW'08, Co-located with the 17th ACM Conference on Information and Knowledge Management, CIKM'08
Pages97-104
Number of pages8
DOIs
StatePublished - 2008
Event2nd International Workshop on Ontologies and Information Systems for the Semantic Web, ONISW'08, Co-located with the 17th ACM Conference on Information and Knowledge Management, CIKM'08 - Napa Valley, CA, United States
Duration: Oct 26 2008Oct 30 2008

Publication series

NameInternational Conference on Information and Knowledge Management, Proceedings

Conference

Conference2nd International Workshop on Ontologies and Information Systems for the Semantic Web, ONISW'08, Co-located with the 17th ACM Conference on Information and Knowledge Management, CIKM'08
Country/TerritoryUnited States
CityNapa Valley, CA
Period10/26/0810/30/08

Keywords

  • Aggregate queries
  • Description logic
  • Incomplete information
  • Ontology languages

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