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ICDT
2005
ACM
14 years 3 months ago
2005
ACM
We give two sufficient conditions on XPath like languages for having first order expressivity, meaning that every first order definable set of paths in an ordered node-labeled t...
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 ...
COOPIS
1996
IEEE
14 years 2 months ago
1996
IEEE
Rational drug design is an example where integrated access to heterogeneous scientific data is urgently needed, as it becomes rapidly available due to new experimental and computa...
CIKM
2008
Springer
14 years 9 days ago
2008
Springer
Greek is one of the most difficult languages to handle in Web Information Retrieval (IR) related tasks. Its difficulty stems from the fact that it is grammatically, morphologicall...
CLEF
2008
Springer
14 years 3 days ago
2008
Springer
In this article, we focus our efforts (i) on the study of how to automatically extract and exploit visual concepts and (ii) on fast visual diversity. First, in the Visual Concept D...