Results 11 to 20 of about 24,784 (209)
Provenance for SPARQL Queries [PDF]
, 2012 Determining trust of data available in the Semantic Web is fundamental for applications and users, in particular for linked open data obtained from SPARQL endpoints. There exist several proposals in the literature to annotate SPARQL query results with values from abstract models, adapting the seminal works on provenance for annotated relational ...
Damásio, C. V. +2 more
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Using SPARQL – The Practitioners’ Viewpoint [PDF]
, 2018 A number of studies have analyzed SPARQL log data to draw conclusions about how SPARQL is being used. To complement this work, a survey of SPARQL users has been undertaken. Whilst confirming some of the conclusions of the previous studies, the current work is able to provide additional insight into how users create SPARQL queries, the difficulties they
Warren, Paul, Mulholland, Paul
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Database Release: PPSDB, a Linked Open Data Knowledge Base for Protist-Prokaryote Symbioses. [PDF]
J Eukaryot MicrobiolABSTRACT As the ecological and evolutionary importance of symbiotic interactions between protists (microbial eukaryotes) and prokaryotes (bacteria and archaea) is better appreciated, keeping an overview of their diversity and the literature becomes a growing and ongoing challenge.
Seah BKB.
europepmc +2 more sources
Global cross-database search system for X-ray absorption spectra. [PDF]
J Synchrotron RadiatA portal to cross‐search XAFS databases worldwide has been created and the unification of vocabulary and knowledge behind it are discussed.While the importance of a systematic overview of scientific data and demands toward data integration are increasing, data capitalization and confidentiality are also emerging competitively.
Ishii M +5 more
europepmc +2 more sources
SPARQLES: Monitoring public SPARQL endpoints
Semantic Web, 2017 We describe SPARQLES: an online system that monitors the health of public SPARQL endpoints on the Web by probing them with custom-designed queries at regular intervals. We present the architecture of SPARQLES and the variety of analytics that it runs over public SPARQL endpoints, categorised by availability, discoverability, performance and ...
Vandenbussche, Pierre Yves +4 more
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Recuperación de información con Linked Open Data
Investigación Bibliotecológica: Archivonomía, Bibliotecología e Información, 2022 El objetivo de este artículo es analizar el proceso de recuperación de información (RI) mediante la aplicación de Linked Open Data (LOD). La metodología empleada en este trabajo consta de dos partes: en la primera, se llevó a cabo una revisión de ...
10.22201/iibi.24488321xe.2022.91.58567
doaj +1 more source
IDSM ChemWebRDF: SPARQLing small-molecule datasets
Journal of Cheminformatics, 2021 The Resource Description Framework (RDF), together with well-defined ontologies, significantly increases data interoperability and usability. The SPARQL query language was introduced to retrieve requested RDF data and to explore links between them. Among
Jakub Galgonek, Jiří Vondrášek
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Linked Data for the Historic Environment
Internet Archaeology, 2022 This article discusses the outcomes of research undertaken by the Hypermedia Research Group at the University of South Wales in collaboration with the OASIS team at the Archaeology Data Service in the Linked Data for the Historic Environment (LD4HE ...
Ceri Binding +4 more
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SPARQL beyond Subgraph Matching [PDF]
, 2010 We extend the Semantic Web query language SPARQL by defining the semantics of SPARQL queries under the entailment regimes of RDF, RDFS, and OWL. The proposed extensions are part of the SPARQL 1.1 Entailment Regimes working draft which is currently being developed as part of the W3C standardization process of SPARQL 1.1.
Glimm, B, Krötzsch, M
openaire +3 more sources
On Defining SPARQL with Boolean Tensor Algebra [PDF]
, 2015 The Resource Description Framework (RDF) represents information as subject-predicate-object triples. These triples are commonly interpreted as a directed labelled graph. We propose an alternative approach, interpreting the data as a 3-way Boolean tensor.
Metzler, Saskia, Miettinen, Pauli
core +1 more source