548 search results - page 4 / 110 » Integrating Open Sources and Relational Data with SPARQL |
EDBT
2012
ACM
11 years 10 months ago
2012
ACM
Query optimization in RDF Stores is a challenging problem as SPARQL queries typically contain many more joins than equivalent relational plans, and hence lead to a large join orde...
ESWS
2008
Springer
13 years 9 months ago
2008
Springer
In this contribution a system is presented, which provides access to distributed data sources using Semantic Web technology. While it was primarily designed for data sharing and sc...
ISEMANTICS
2010
13 years 9 months ago
2010
Twarql is an infrastructure translating microblog posts from Twitter as Linked Open Data in real-time. The approach employed in Twarql can be summarized as follows: (1) extract co...
BMCBI
2011
13 years 2 months ago
2011
Background: Broad-based collaborations are becoming increasingly common among disease researchers. For example, the Global HIV Enterprise has united cross-disciplinary consortia t...
CSSW
2007
13 years 9 months ago
2007
Abstract: This paper discusses RDF related work in the context of OpenLink Virtuoso, a general purpose relational / federated database and applications platform. We discuss adaptin...