Results 251 to 260 of about 138,833 (285)

Evaluation of metadata representations in RDF stores

Semantic Web, 2019
The article analyses the contemporary situation in the research on childhood and generalises the prevailing approaches to a child, childhood, as well as to research methodology.
Johannes Frey, Kay Müller, Sebastian Hellmann, E. Rahm, Maria-Esther Vidal   +4 more
semanticscholar   +1 more source

RDF/RDFS-based Relational Database Integration

22nd International Conference on Data Engineering (ICDE'06), 2006
We study the problem of answering queries through a RDF/RDFS ontology, given a set of view-based mappings between one or more relational schemas and this target ontology. Particularly, we consider a set of RDFS semantic constraints such as rdfs:subClassof, rdfs:subPropertyof, rdfs:domain, and rdfs:range, which are present in RDF model but neither XML ...
null Huajun Chen, null Zhaohui Wu, null Heng Wang, null Yuxin Mao   +3 more
openaire   +1 more source

Common Subsumbers in RDF

2013
Since their definition in 1992, Least Common Subsumers (LCSs) have been identified as services supporting learning by examples. Nowadays, the Web of Data offers a hypothetically unlimited dataset of interlinked and machine-understandable examples modeled as RDF resources.
COLUCCI, Simona, Donini, Francesco M., DI SCIASCIO, Eugenio   +2 more
openaire   +2 more sources

Validating RDF Data

Validating RDF Data, 2017
RDF and Linked Data have broad applicability across many fields, from aircraft manufacturing to zoology. Requirements for detecting bad data differ across communities, fields, and tasks, but nearly all involve some form of data validation.
Jose Emilio Labra Gayo, E. Prud'hommeaux, Iovka Boneva, D. Kontokostas   +3 more
semanticscholar   +1 more source

Recent Progress in Refuse Derived Fuel (RDF) Co-processing in Cement Production: Direct Firing in Kiln/Calciner vs Process Integration of RDF Gasification

Waste and Biomass Valorization, 2022
Prateek Sharma, P. Sheth, B. Mohapatra
semanticscholar   +1 more source

Enabling Semantic Mediation for Business Applications: XML-RDF, RDF-XML and XSD-RDFS transformations

2007
In this paper, we describe results of our work in developing transformation tools that enable use of RDF-based Semantic Mediation tools for integration of business applications that have implemented XML Schema-based interfaces. Specifically, we are concerned with validating advanced Semantic Mediation solutions that required XML to RDF, RDF to XML, and
Miletić, I., Vujasinović, M., Ivezić, Nenad, Marjanović, Zoran   +3 more
openaire   +2 more sources

RDF-Stores und RDF-Query-Engines

Datenbank-Spektrum, 2011
RDF ist das Datenmodell der Semantic-Web- und Linked-Data-Initiativen, das zunehmend Verbreitung findet. Es zeichnet sich durch feinkornige Strukturierungsmoglichkeiten in Form binarer Relationen und durch flexible Typisierung ohne die Notwendigkeit eines praskriptiven Schemas aus.
Thomas Neumann, Gerhard Weikum
openaire   +1 more source

Querying RDF Data

2011
This chapter provides an introduction to the RDF language as well as surveys the languages that can be used for querying RDF graphs. Then it reviews some of the languages that can be used for querying RDF and provides a comparison between these query languages.
Alkhateeb, Faisal, Euzenat, Jérôme
openaire   +2 more sources

XML, RDF, and relatives

IEEE Intelligent Systems, 2001
Languages for representing data and knowledge are an important aspect of the Semantic Web, and there are a lot of languages around! Most languages are based on XML (eXtensible Markup Language) or use XML as syntax; some have connections to RDF (Resource Description Framework) or RDF schemas.
openaire   +2 more sources

RDF-GL: A SPARQL-Based Graphical Query Language for RDF

2010
This chapter presents RDF-GL, a graphical query language (GQL) for RDF. The GQL is based on the textual query language SPARQL and mainly focuses on SPARQL SELECT queries. The advantage of a GQL over textual query languages is that complexity is hidden through the use of graphical symbols.
Hogenboom, F.P., Milea, D.V., Frasincar, F., Kaymak, U.   +3 more
openaire   +2 more sources