Results 51 to 60 of about 24,802 (228)

DIGITAL WORKFLOWS FOR A 3D SEMANTIC REPRESENTATION OF AN ANCIENT MINING LANDSCAPE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
The ancient mining landscape of Schwaz/Brixlegg in the Tyrol, Austria witnessed mining from prehistoric times to modern times creating a first order cultural landscape when it comes to one of the most important inventions in human history: the production
G. Hiebel, K. Hanke
doaj   +1 more source

Querying RDF Data Using A Multigraph-based Approach [PDF]

open access: yes, 2016
International audienceRDF is a standard for the conceptual description of knowledge , and SPARQL is the query language conceived to query RDF data. The RDF data is cherished and exploited by various domains such as life sciences, Semantic Web, social ...
Ienco, Dino   +3 more
core   +4 more sources

Using superimposed multidimensional schemas and OLAP patterns for RDF data analysis

open access: yesOpen Computer Science, 2018
The foundations for traditional data analysis are Online Analytical Processing (OLAP) systems that operate on multidimensional (MD) data. The Resource Description Framework (RDF) serves as the foundation for the publication of a growing amount of ...
Hilal Median   +2 more
doaj   +1 more source

A comparison of approaches to accessing existing biological and chemical relational databases via SPARQL

open access: yesJournal of Cheminformatics, 2023
Current biological and chemical research is increasingly dependent on the reusability of previously acquired data, which typically come from various sources.
Jakub Galgonek, Jiří Vondrášek
doaj   +1 more source

Using logical constraints to validate statistical information about disease outbreaks in collaborative knowledge graphs: the case of COVID-19 epidemiology in Wikidata [PDF]

open access: yesPeerJ Computer Science, 2022
Urgent global research demands real-time dissemination of precise data. Wikidata, a collaborative and openly licensed knowledge graph available in RDF format, provides an ideal forum for exchanging structured data that can be verified and consolidated ...
Houcemeddine Turki   +10 more
doaj   +2 more sources

QB2OLAP : enabling OLAP on statistical linked open data [PDF]

open access: yes, 2016
Publication and sharing of multidimensional (MD) data on the Semantic Web (SW) opens new opportunities for the use of On-Line Analytical Processing (OLAP).
Bach Pedersen, Torben   +5 more
core   +1 more source

Path Index Based Keywords to SPARQL Query Transformation for Semantic Data Federations

open access: yesThe 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

CIRO: COVID-19 infection risk ontology.

open access: yesPLoS ONE, 2023
Public health authorities perform contact tracing for highly contagious agents to identify close contacts with the infected cases. However, during the pandemic caused by coronavirus disease 2019 (COVID-19), this operation was not employed in countries ...
Shusaku Egami   +3 more
doaj   +2 more sources

Building an Owl-Ontology for Representing, Linking and Querying SemAF Discourse Annotations

open access: yesRasprave Instituta za Hrvatski Jezik i Jezikoslovlje, 2023
Linguistic Linked Open Data (LLOD) are technologies that provide a powerful instrument for representing and interpreting language phenomena on a web-scale.
Christian Chiarcos   +8 more
doaj   +1 more source

TriAL: A navigational algebra for RDF triplestores [PDF]

open access: yes, 2018
Navigational queries over RDF data are viewed as one of the main applications of graph query languages, and yet the standard model of graph databases—essentially labeled graphs—is different from the triples-based model of RDF.
Libkin, Leonid   +3 more
core   +1 more source

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