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» RAL: an Algebra for Querying RDF
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SEMWEB
2009
Springer
13 years 12 months ago
XLWrap - Querying and Integrating Arbitrary Spreadsheets with SPARQL
In this paper a novel approach is presented for generating RDF graphs of arbitrary complexity from various spreadsheet layouts. Currently, none of the available spreadsheet-to-RDF ...
Andreas Langegger, Wolfram Wöß
PGLDB
2003
166views Database» more  PGLDB 2003»
13 years 6 months ago
ROSA: A Data Model and Query Language for e-Learning Objects
Learning Content Management Systems (LCMS) supports e-learning applications with storage and efficient access for e-learning objects (LO)s. ROSA is a LCMS built as a semantic laye...
Fabio Porto, Ana Maria de Carvalho Moura, Adriana ...
SEMWEB
2009
Springer
13 years 10 months ago
Reasoning With Provenance, Trust and all that other Meta Knowlege in OWL
Abstract—For many tasks, such as the integration of knowledge bases in the semantic web, one must not only handle the knowledge itself, but also characterizations of this knowled...
Simon Schenk, Renata Queiroz Dividino, Steffen Sta...
DEXAW
2007
IEEE
128views Database» more  DEXAW 2007»
13 years 9 months ago
Sharing Data on the Grid using Ontologies and distributed SPARQL Queries
The vision of the Semantic Web is to make Web content machine-readable. To describe data, the Resource Description Framework has been extended with a schema-level and description ...
Andreas Langegger, Martin Blöchl, Wolfram W&o...
DLOG
2003
13 years 6 months ago
Description Logic Systems
The Semantic Web initiative defines important challenges for knowledge representation and database systems. Recently, several standards for representation languages have been pro...
Ralf Möller, Volker Haarslev