44 search results - page 4 / 9 » Processing SPARQL queries over distributed RDF graphs |
WWW
2008
ACM
14 years 8 months ago
2008
ACM
In this paper, we formalize the problem of Basic Graph Pattern (BGP) optimization for SPARQL queries and main memory graph implementations of RDF data. We define and analyze the c...
ICEIS
2009
IEEE
14 years 2 months ago
2009
IEEE
Abstract. In the Web environment, rich, diverse sources of heterogeneous and distributed data are ubiquitous. In fact, even the information characterizing a single entity - like, f...
SEMWEB
2009
Springer
14 years 4 days ago
2009
Springer
RDF is an increasingly important paradigm for the representation of information on the Web. As RDF databases increase in size to approach tens of millions of triples, and as sophis...
DBISP2P
2005
Springer
13 years 9 months ago
2005
Springer
Abstract. We study the problem of evaluating RDF queries over structured overlay networks. We consider the publish/subscribe scenario where nodes subscribe with long-standing queri...
CIKM
2009
Springer
13 years 11 months ago
2009
Springer
Current approaches to RDF graph indexing suffer from weak data locality, i.e., information regarding a piece of data appears in multiple locations, spanning multiple data structur...