491 search results - page 11 / 99 » Optimizing complex queries with multiple relation instances |
ER
2004
Springer
13 years 11 months ago
2004
Springer
The semantic web envisions a World Wide Web in which data is described with rich semantics and applications can pose complex queries. Ontologies, a cornerstone of the semantic web,...
WISE
2005
Springer
14 years 1 months ago
2005
Springer
Abstract. Approximation has been identified as a potential way of reducing the complexity of logical reasoning. Here we explore approximation for speeding up instance retrieval in...
SIGMOD
2005
ACM
14 years 1 months ago
2005
ACM
One of the most powerful features of SQL is the use of nested queries. Most research work on the optimization of nested queries focuses on aggregate subqueries. However, the solut...
CJ
2010
13 years 7 months ago
2010
Abstract. Motivated by research on how topology may be a helpful foundation for building information modeling (BIM), a relational database version of the notions of chain complex a...
IPPS
2009
IEEE
14 years 2 months ago
2009
IEEE
In this paper, we explore the problem of mapping filtering services on large-scale heterogeneous platforms. Two important optimization criteria should be considered in such a fra...