550 search results - page 81 / 110 » An Expressive Language for Linear Spatial Database Queries |
CIKM
2011
Springer
12 years 8 months ago
2011
Springer
We present Nyaya, a system for the management of Semantic-Web data which couples a general-purpose and extensible storage mechanism with efficient ontology reasoning and querying ...
KES
2010
Springer
13 years 7 months ago
2010
Springer
While computation of biological information takes center stage in today’s research, knowledge-based query processing in biological databases has not gained much attention. The co...
ICDE
2012
IEEE
11 years 11 months ago
2012
IEEE
Abstract—This paper revisits the classical problem of multiquery optimization in the context of RDF/SPARQL. We show that the techniques developed for relational and semi-structur...
VLDB
2004
ACM
14 years 9 months ago
2004
ACM
With the recent and continuing advances in areas such as wireless communications and positioning technologies, mobile, locationbased services are becoming possible. Such services ...
BIRTHDAY
1992
Springer
14 years 23 days ago
1992
Springer
A context-free grammar is a single-tree grammar (STG) if every nonterminal symbol has at most one production rule whose right hand side contains nonterminal symbols. Various prope...