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» Efficiently querying rdf data in triple stores
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WWW
2002
ACM
14 years 8 months ago
RQL: a declarative query language for RDF
Real-scale Semantic Web applications, such as Knowledge Portals and E-Marketplaces, require the managementof large volumes of metadata, i.e., information describing the available ...
Gregory Karvounarakis, Sofia Alexaki, Vassilis Chr...
EDBT
2010
ACM
164views Database» more  EDBT 2010»
13 years 10 months ago
Techniques for efficiently querying scientific workflow provenance graphs
A key advantage of scientific workflow systems over traditional scripting approaches is their ability to automatically record data and process dependencies introduced during workf...
Manish Kumar Anand, Shawn Bowers, Bertram Ludä...
HPDC
2010
IEEE
13 years 8 months ago
Efficient querying of distributed provenance stores
Current projects that automate the collection of provenance information use a centralized architecture for managing the resulting metadata - that is, provenance is gathered at rem...
Ashish Gehani, Minyoung Kim, Tanu Malik
SEMWEB
2005
Springer
14 years 29 days ago
Benchmarking Database Representations of RDF/S Stores
Abstract. In this paper we benchmark three popular database representations of RDF/S schemata and data: (a) a schema-aware (i.e., one table per RDF/S class or property) with explic...
Yannis Theoharis, Vassilis Christophides, Gregory ...
SEMWEB
2009
Springer
14 years 2 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