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» Foundations of RDF Databases
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WWW
2008
ACM
14 years 8 months ago
SPARQL basic graph pattern optimization using selectivity estimation
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...
Markus Stocker, Andy Seaborne, Abraham Bernstein, ...
ERCIMDL
1999
Springer
121views Education» more  ERCIMDL 1999»
13 years 12 months ago
An Indexing, Browsing, Search and Retrieval System for Audiovisual Libraries
This paper describes an application which enables the computer-assisted generation of Dublin Core-based metadata descriptions and online digital visual summaries for videos. It is...
Jane Hunter, Jan Newmarch
CIKM
2008
Springer
13 years 9 months ago
MashQL: a query-by-diagram topping SPARQL
This article is motivated by the importance of building web data mashups. Building on the remarkable success of Web 2.0 mashups, and specially Yahoo Pipes, we generalize the idea ...
Mustafa Jarrar, Marios D. Dikaiakos
ESWS
2008
Springer
13 years 9 months ago
Instance Based Clustering of Semantic Web Resources
Abstract. The original Semantic Web vision was explicit in the need for intelligent autonomous agents that would represent users and help them navigate the Semantic Web. We argue t...
Gunnar Aastrand Grimnes, Peter Edwards, Alun D. Pr...
EDBT
2002
ACM
138views Database» more  EDBT 2002»
14 years 7 months ago
DAML+OIL: A Reason-able Web Ontology Language
Ontologies are set to play a key role in the "Semantic Web", extending syntactic interoperability to semantic interoperability by providing a source of shared and precise...
Ian Horrocks