476 search results - page 29 / 96 » Translation of Ontology Retrieval Problem into Relational Qu... |
EDBT
2009
ACM
14 years 2 months ago
2009
ACM
Given a set Q of keywords, conventional keyword search (KS) returns a set of tuples, each of which (i) is obtained from a single relation, or by joining multiple relations, and (i...
FOCS
2003
IEEE
14 years 28 days 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 ...
KCAP
2009
ACM
14 years 10 days ago
2009
ACM
PowerAqua1 is a Question Answering system, which takes as input a natural language query and is able to return answers drawn from relevant semantic resources found anywhere on the...
EDBTW
2006
Springer
13 years 11 months ago
2006
Springer
Abstract. We describe design and implementation of the linguistic query language DDDquery. This language aims at querying a large linguistic database storing a corpus of richly ann...
IJCAI
2003
13 years 9 months ago
2003
In this paper, we define a simple but scalable framework for peer-to-peer data sharing systems, in which the problem of answering queries over a network of semantically related p...