439 search results - page 60 / 88 » Unnesting Arbitrary Queries |
FOCS
2003
IEEE
14 years 3 months ago
2003
IEEE
We give a complexity theoretic classification of homomorphism problems for graphs and, more generally, relational structures obtained by restricting the left hand side structure ...
AMR
2006
Springer
14 years 1 months ago
2006
Springer
Most of the currently existing image retrieval systems make use of either low-level features or semantic (textual) annotations. A combined usage during annotation and retrieval is ...
PLANX
2007
13 years 11 months ago
2007
Several proposals for updating XML have been introduced. Many of them have a rather complicated semantics due to the interaction of side-effects and updates, and some proposals a...
DAGSTUHL
2004
13 years 11 months ago
2004
One aim of tool integration is designing an integrated development environment that accesses the data/models of different tools and keeps them consistent throughout a project bein...
IJCAI
1989
13 years 11 months ago
1989
The foundations of a class of logic programming systems with the expressive power of full first-order logic and a non-monotonic component is addressed. The underlying refutation m...