3368 search results - page 92 / 674 » The Complexity of Query Reliability |
VLDB
1991
ACM
14 years 13 days ago
1991
ACM
In order to cope efficiently with simple or complex queries as well as different application requirements (e.g., ad-hoc versus repetitive queries), a query optimizer ought to supp...
DEXAW
2008
IEEE
13 years 10 months ago
2008
IEEE
With the increasing development of real applications using Semantic Web Technologies, it is necessary to provide scalable and efficient ontology querying and reasoning systems. In ...
AMW
2010
13 years 10 months ago
2010
We address the problem of answering conjunctive queries over knowledge bases, specified by sets of first-order sentences called tuple-generating dependencies (TGDs). This problem i...
DAIS
2009
13 years 6 months ago
2009
Queries are widely used for acquiring data distributed in opportunistically formed mobile networks. However, when queries are executed in such dynamic settings, the returned result...
ADL
2000
Springer
14 years 1 months ago
2000
Springer
Digital libraries are a core information technology. When the stored data is complex, e.g. high-resolution images or molecular protein structures, simple query types like the exac...