Skip to Main content Skip to Navigation
Journal articles

SQUALL: The expressiveness of SPARQL 1.1 made available as a controlled natural language

Sébastien Ferré 1
1 LIS - Logical Information Systems
IRISA-D7 - GESTION DES DONNÉES ET DE LA CONNAISSANCE
Abstract : The Semantic Web (SW) is now made of billions of triples, which are available as Linked Open Data (LOD) or as RDF stores. The SPARQL query language provides a very expressive way to search and explore this wealth of semantic data. However, user-friendly interfaces are needed to bridge the gap between end-users and SW formalisms. Navigation-based interfaces and natural language interfaces require no or little training, but they cover a small fragment of SPARQL's expressivity. We propose SQUALL, a query and update language that provides the full expressiveness of SPARQL 1.1 through a flexible controlled natural language (e.g., solution modifiers through superlatives, re-lational algebra through coordinations, filters through comparatives). A comprehensive and modular definition is given as a Montague grammar, and an evaluation of natural-ness is done on the QALD challenge. SQUALL is conceived as a component of natural language interfaces, to be combined with lexicons, guided input, and contextual dis-ambiguation. It is available as a Web service that translates SQUALL sentences to SPARQL, and submits them to SPARQL endpoints (e.g., DBpedia), therefore ensuring SW compliance, and leveraging the efficiency of SPARQL engines.
Complete list of metadatas

Cited literature [41 references]  Display  Hide  Download

https://hal.inria.fr/hal-01100300
Contributor : Sébastien Ferré <>
Submitted on : Tuesday, January 6, 2015 - 11:37:30 AM
Last modification on : Tuesday, March 10, 2020 - 10:10:03 AM
Document(s) archivé(s) le : Wednesday, June 3, 2015 - 5:15:49 PM

File

main-revised.pdf
Files produced by the author(s)

Licence


Distributed under a Creative Commons Attribution - NonCommercial - ShareAlike 4.0 International License

Identifiers

Citation

Sébastien Ferré. SQUALL: The expressiveness of SPARQL 1.1 made available as a controlled natural language. Data and Knowledge Engineering, Elsevier, 2014, 94, pp.163 - 188. ⟨10.1016/j.datak.2014.07.010⟩. ⟨hal-01100300⟩

Share

Metrics

Record views

1148

Files downloads

1967