Results 121 to 130 of about 8,825 (227)

The Multiset Semantics of SPARQL Patterns [PDF]

, 2016
This is an extended and updated version of the paper accepted at the International Semantic Web Conference ...
Renzo Angles, Claudio Gutierrez 0001
openaire   +2 more sources

Predicting SPARQL Query Performance [PDF]

, 2014
International audienceWe address the problem of predicting SPARQL query performance. We use machine learning techniques to learn SPARQL query performance from previously executed queries. We show how to model SPARQL queries as feature vectors, and use k -
Fabien G, Rakebul Hasan, Gandon, Fabien, Fabien Gandon, Hasan, Rakebul   +4 more
core   +1 more source

Get All, Filter Details - On the Use of Regular Expressions in SPARQL Queries [PDF]

SPARQL is the standardised query language for the RDF data model. To process literal strings, filter expressions can be used with regexes. However, regex can be slow due to its computational complexity. As an initial step towards this area, we present an
Gibbins, Nicholas, Aljaloud, Saud, Luczak-Rösch, Markus, Chown, Tim   +3 more
core  

Using SPARQL to access Linked Open Data [PDF]

, 2015
This lesson explains why many cultural institutions are adopting graph databases, and how researchers can access these data though the query language called ...
Matthew Lincoln
core  

SPARQL as a Foreign Language

CoRR, 2017
In the last years, the Linked Data Cloud has achieved a size of more than 100 billion facts pertaining to a multitude of domains. However, accessing this information has been significantly challenging for lay users. Approaches to problems such as Question Answering on Linked Data and Link Discovery have notably played a role in increasing information ...
Tommaso Soru, Edgard Marx, Diego Moussallem, Gustavo Publio, André Valdestilhas, Diego Esteves, Ciro Baron Neto   +6 more
openaire   +3 more sources

Extending SPARQL for Recommendations

Proceedings of Semantic Web Information Management on Semantic Web Information Management, 2014
For processing data on the Web, recommender systems and SPARQL are two popular paradigms, which however have rather different characteristics. SPARQL is a declarative language on RDF graphs which allows a user to precisely specify the desired information.
Victor Anthony Arrascue Ayala, Martin Przyjaciel-Zablocki, Thomas Hornung 0001, Alexander Schätzle, Georg Lausen   +4 more
openaire   +1 more source

An empirical performance evaluation of a semantic-based data retrieving process from RDBs & RDF data storages

Maskana, 2017
SQL and, more recently, SPARQL are standard languages of the software industry for retrieving data. Other studies showed that retrieving data by using a SPARQL query is much slower than the semantically equivalent SQL query.
Leandro Tabares Martín, Félix Oscar Fernández Peña, Amed Abel Leiva Mederos, Jyrki Nummenmaa   +3 more
doaj  

Pemanfaatan Linked Data untuk Meningkatkan Kualitas Information Knowledge pada Resources Game Online

Jurnal Nasional Teknik Elektro dan Teknologi Informasi, 2017
This paper proposes an online game design that has resources with interoperability. Interoperability means the resources can share, re-used, and interlinked with another Unified Resources Identifier (URI).
Mohammad Yani
doaj   +1 more source

The LiLa Knowledge Base: Querying Interoperable Latin Resources

Umanistica Digitale
The proliferation of digital linguistic resources for Latin has created significant research opportunities, yet their potential is often constrained by a lack of interoperability.
Marco Passarotti, Eleonora Litta
doaj   +1 more source

Translating expressive ontology mappings into rewriting rules to implement query rewriting [PDF]

, 2011
The increasing amount of structured RDF data published by the Linked Data community poses a great challenge when it comes to reconcile heterogeneous schemas adopted by data publishers.
Correndo, Gianluca, Shadbolt, Nigel
core