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- articleMay 2018
Complexity and Expressive Power of Weakly Well-Designed SPARQL
Theory of Computing Systems (TOCSYS), Volume 62, Issue 4May 2018, Pages 772–809https://doi.org/10.1007/s00224-017-9802-9SPARQL is the standard query language for RDF data. The distinctive feature of SPARQL is the OPTIONAL operator, which allows for partial answers when complete answers are not available due to lack of information. However, optional matching is ...
- ArticleMay 2011
RDFPath: path query processing on large RDF graphs with mapreduce
ESWC'11: Proceedings of the 8th international conference on The Semantic WebMay 2011, Pages 50–64https://doi.org/10.1007/978-3-642-25953-1_5The MapReduce programming model has gained traction in different application areas in recent years, ranging from the analysis of log files to the computation of the RDFS closure. Yet, for most users the MapReduce abstraction is too low-level since even ...
- articleDecember 2005
Smart style: combining RDF semantics with XML document transformations
International Journal of Web Engineering and Technology (IJWET), Volume 2, Issue 2/3December 2005, Pages 248–263https://doi.org/10.1504/IJWET.2005.008486'Document Web' (XML-based) and 'Semantic Web' (RDF-based) methods are often surprisingly hard to integrate. In this paper, we analyse the role of (RDF) semantics in selecting, structuring and styling (XML) content. We use our analysis to derive a more ...
- articleAugust 2003
Querying the Semantic Web with RQL
Computer Networks: The International Journal of Computer and Telecommunications Networking (CNTW), Volume 42, Issue 505 August 2003, Pages 617–640https://doi.org/10.1016/S1389-1286(03)00227-5Real-scale Semantic Web applications, such as Knowledge Portals and E-Marketplaces, require the management of voluminous repositories of resource metadata. The Resource Description Framework (RDF) enables the creation and exchange of metadata as any ...
