Results 101 to 110 of about 24,784 (209)
SPARQL playground: A block programming tool to experiment with SPARQL [PDF]
, 2015 SPARQL is a powerful query language for Semantic Web data sources but one which is quite complex to master. As the block programming paradigm has been succesfully used to teach programming skills, we propose a tool that allows users to build and run SPARQL queries on an endpoint without previous knowledge of the syntax of SPARQL and the model of the ...
BOTTONI, Paolo Gaspare +1 more
openaire +1 more source
Semantic Web, 2015 The need for recursive queries in the Semantic Web setting is becoming more and more apparent with the emergence of datasets where different pieces of information are connected by complicated patterns. This was acknowledged by the W3C committee by the inclusion of property paths in the SPARQL standard.
Reutter, Juan L. +2 more
openaire +2 more sources
DataThis paper presents how an ontology-based Knowledge Graph (KG) for basketball box scores can be exploited to support several real use cases, and also presents competency questions, including sports analytics, complex question answering and data browsing ...
Michalis Mountantonakis +3 more
doaj +1 more source
Path Index Based Keywords to SPARQL Query Transformation for Semantic Data Federations
The International Journal on Advances in ICT for Emerging Regions, 2016 Semantic web is a highly emerging research domain. Enhancing the ability of keyword query processing on Semantic Web data provides a huge support for familiarizing the usefulness of Semantic Web to the general public.
Thilini Cooray, Gihan Wikramanayake
doaj +1 more source
Semantic Web Approach to Ease Regulation Compliance Checking in Construction Industry
Future Internet, 2012 Regulations in the Building Industry are becoming increasingly complex and involve more than one technical area, covering products, components and project implementations.
Bruno Fies +4 more
doaj +1 more source
Processing SPARQL queries with regular expressions in RDF databases
BMC Bioinformatics, 2011 Background As the Resource Description Framework (RDF) data model is widely used for modeling and sharing a lot of online bioinformatics resources such as Uniprot (dev.isb-sib.ch/projects/uniprot-rdf) or Bio2RDF (bio2rdf.org), SPARQL - a W3C ...
Cho Hune +6 more
doaj +1 more source
SPARQL Faceter—Client-side Faceted Search Based on SPARQL
CEUR Workshop Proceedings, 2016 Peer ...
Hyvönen Eero, Koho Mikko, Heino Erkki
openaire +5 more sources
Applied SciencesGenerating SPARQL queries from natural language questions is challenging in Knowledge Base Question Answering (KBQA) systems. The current state-of-the-art models heavily rely on fine-tuning pretrained models such as T5.
Jiexing Qi +7 more
doaj +1 more source
, 2016 SPARQL is the standard query language for RDF data. The distinctive feature of SPARQL is the OPTIONAL operator, which allows for partial answers when complete answers are not available due to lack of information. However, optional matching is computationally expensive - query answering is PSPACE-complete.
Kaminski, Mark, Kostylev, Egor V.
openaire +3 more sources
Semantic Web Techniques to Support Interoperability in Distributed Networked Environments
, 2008 We explore two Semantic Web techniques arising from ITA research into semantic alignment and interoperability in distributed networks. The first is POAF (Portable Ontology Aligned Fragments) which addresses issues relating to the portability and usage of
Bao, Jie +5 more
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