Results 291 to 300 of about 83,689 (349)
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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 ...
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.
Thomas Neumann 0001, Gerhard Weikum
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2005
RDF has been proposed by W3C as a metadata model and language for representing information about resources in WWW. In this paper we introduce Multidimensional RDF (or MRDF), as an extension of RDF, suitable for representing context-dependent RDF data.
Manolis Gergatsoulis, Pantelis D. Lilis
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RDF has been proposed by W3C as a metadata model and language for representing information about resources in WWW. In this paper we introduce Multidimensional RDF (or MRDF), as an extension of RDF, suitable for representing context-dependent RDF data.
Manolis Gergatsoulis, Pantelis D. Lilis
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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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Compression of RDF dictionaries
Proceedings of the 27th Annual ACM Symposium on Applied Computing, 2012The use of dictionaries is a common practice among those applications performing on huge RDF datasets. It allows long terms occurring in the RDF triples to be replaced by short IDs which reference them. This decision greatly compacts the dataset and thus mitigates its scalability issues. However, the dictionary size is not negligible and the techniques
Miguel A. Martínez-Prieto +2 more
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2011
RDF (Resource Description Framework) is a World Wide Web Consortium recommendation for specifying meta-data models on the web. RDF databases consist of triples in the form of subject-predicateobject, which are often conceptualized as defining a directed labeled graph. In this paper, we extend the basic model of RDF by introducing two types of integrity
Akhtar, Waseem +2 more
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RDF (Resource Description Framework) is a World Wide Web Consortium recommendation for specifying meta-data models on the web. RDF databases consist of triples in the form of subject-predicateobject, which are often conceptualized as defining a directed labeled graph. In this paper, we extend the basic model of RDF by introducing two types of integrity
Akhtar, Waseem +2 more
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Proceedings of the 17th international conference on World Wide Web, 2008
The World Wide Web Consortium's RDF standard primarily consists of (subject, property, object) triples that specify the value that a given subject has for a given property. However, it is frequently the case that even for a fixed subject and property, the value varies with time.
PUGLIESE, Andrea +2 more
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The World Wide Web Consortium's RDF standard primarily consists of (subject, property, object) triples that specify the value that a given subject has for a given property. However, it is frequently the case that even for a fixed subject and property, the value varies with time.
PUGLIESE, Andrea +2 more
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RDF Data Storage and Query Processing Schemes
ACM Computing Surveys, 2018The Resource Description Framework (RDF) represents a main ingredient and data representation format for Linked Data and the Semantic Web. It supports a generic graph-based data model and data representation format for describing things, including their ...
Marcin Wylot +3 more
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Fuel processing technology, 2018
Processing Municipal Solid Waste (MSW) into a Refuse Derived Fuel (RDF) reduces experimental variability and improves handling. This study analyzes the pyrolysis of individual components to define the model components that mimic real RDF.
S. Aluri +5 more
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Processing Municipal Solid Waste (MSW) into a Refuse Derived Fuel (RDF) reduces experimental variability and improves handling. This study analyzes the pyrolysis of individual components to define the model components that mimic real RDF.
S. Aluri +5 more
semanticscholar +1 more source
Alternate track papers & posters of the 13th international conference on World Wide Web - WWW Alt. '04, 2004
RDF/XML does not layer RDF on top of XML ina useful way. We use a simple direct representation of the RDF abstract syntax in XML. We add the ability to name graphs, noting that in practice this is already widely used. We use XSLT as a general syntactic extensibility mechanism to provide human friendly macros for our syntax.
Jeremy J. Carroll, Patrick Stickler
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RDF/XML does not layer RDF on top of XML ina useful way. We use a simple direct representation of the RDF abstract syntax in XML. We add the ability to name graphs, noting that in practice this is already widely used. We use XSLT as a general syntactic extensibility mechanism to provide human friendly macros for our syntax.
Jeremy J. Carroll, Patrick Stickler
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