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New Generation Computing

, Volume 37, Issue 4, pp 361–392 | Cite as

Query Extension Suggestions for Visual Query Systems Through Ontology Projection and Indexing

  • Vidar N. Klungre
  • Ahmet SoyluEmail author
  • Ernesto Jimenez-Ruiz
  • Evgeny Kharlamov
  • Martin Giese
Article

Abstract

Ontology-based visual query formulation is a viable alternative to textual query editors in the Semantic Web domain for extracting data from structured data sources in terms of the skills and knowledge required. A visual query system is at any moment responsible for providing the user with query extension suggestions; however, suggestions leading to empty results are often not useful. To this end, in this article, we first present an approach for projecting OWL 2 ontologies into navigation graphs to be used for query formulation and then a solution where an efficient finite index is used to calculate non-ranked approximated extension suggestions for ontology-based visual query systems using navigation graphs. The results of our experiments suggest that one can efficiently project an ontology into a navigation graph, query it for running an interactive user interface, and suggest query extensions that do not lead to dead-ends.

Keywords

Visual query system Ontology projection Query extensions Indexing 

Notes

Acknowledgements

This project is partly funded by the Center for Scalable Data Access in the Oil and Gas Domain (SIRIUS).

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Copyright information

© Ohmsha, Ltd. and Springer Japan KK, part of Springer Nature 2019

Authors and Affiliations

  • Vidar N. Klungre
    • 1
  • Ahmet Soylu
    • 2
    Email author
  • Ernesto Jimenez-Ruiz
    • 1
    • 3
    • 5
  • Evgeny Kharlamov
    • 4
  • Martin Giese
    • 1
  1. 1.University of OsloOsloNorway
  2. 2.Norwegian University of Science and Technology-NTNUGjøvikNorway
  3. 3.The Alan Turing InstituteLondonUK
  4. 4.Bosch Centre for Artificial IntelligenceRenningenGermany
  5. 5.City, University of LondonLondonUK

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