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Proceedings of the 35th international ACM SIGIR conference on Research and development in information retrieval, 2012
We demonstrate RDF Xpress, a search engine that enables users to effectively retrieve information from large RDF knowledge bases or Linked Data Sources. RDF Xpress provides a search interface where users can combine triple patterns with keywords to form queries.
Elbassuoni, S., Ramanath, M., Weikum, G.
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We demonstrate RDF Xpress, a search engine that enables users to effectively retrieve information from large RDF knowledge bases or Linked Data Sources. RDF Xpress provides a search interface where users can combine triple patterns with keywords to form queries.
Elbassuoni, S., Ramanath, M., Weikum, G.
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Proceedings of the 19th international conference on World wide web, 2010
This paper studies the compressibility of RDF data sets. We show that big RDF data sets are highly compressible due to the structure of RDF graphs (power law), organization of URIs and RDF syntax verbosity. We present basic approaches to compress RDF data and test them with three well-known, real-world RDF data sets.
Fernandez Garcia, Javier David +2 more
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This paper studies the compressibility of RDF data sets. We show that big RDF data sets are highly compressible due to the structure of RDF graphs (power law), organization of URIs and RDF syntax verbosity. We present basic approaches to compress RDF data and test them with three well-known, real-world RDF data sets.
Fernandez Garcia, Javier David +2 more
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RDF/RDFS-based Relational Database Integration
22nd International Conference on Data Engineering (ICDE'06), 2006We 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 +3 more
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RDF-Stores und RDF-Query-Engines
Datenbank-Spektrum, 2011RDF 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.
Neumann, T., Weikum, G.
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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
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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
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Journal of Information Science, 2017
The publication of semantic web data, commonly represented in Resource Description Framework (RDF), has experienced outstanding growth over the last few years. Data from all fields of knowledge are shared publicly and interconnected in active initiatives such as Linked Open Data.
Fernandez, Javier D. +3 more
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The publication of semantic web data, commonly represented in Resource Description Framework (RDF), has experienced outstanding growth over the last few years. Data from all fields of knowledge are shared publicly and interconnected in active initiatives such as Linked Open Data.
Fernandez, Javier D. +3 more
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Enabling Semantic Mediation for Business Applications: XML-RDF, RDF-XML and XSD-RDFS transformations
2007In 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. +3 more
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Tracking RDF Graph Provenance using RDF Molecules
2005The Semantic Web facilitates integrating partial knowledge and finding evidence for hypothesis from web knowledge sources. However, the appropriate level of granularity for tracking provenance of RDF graph remains in debate. RDF document is too coarse since it could contain irrelevant information.
Ding, Li +3 more
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