2043 search results - page 270 / 409 » The Limits of Querying Ontologies |
DEXA
2005
Springer
14 years 3 months ago
2005
Springer
In relational database systems a combination of privileges and views is employed to limit a user’s access and to hide non-public data. The data privacy problem is to decide wheth...
SIGMOD
1999
ACM
14 years 2 months ago
1999
ACM
Existing data-integration systems based on the mediation architecture employ a variety of mechanisms to describe the query-processing capabilities ofsources. However, these system...
ACSC
2004
IEEE
14 years 2 months ago
2004
IEEE
Indexes are the key technology underpinning efficient text search. A range of algorithms have been developed for fast query evaluation and for index creation, but update algorithm...
DEXA
2006
Springer
14 years 2 months ago
2006
Springer
The composition of services that are indexed in a large-scale service directory often involves many complex queries issued by the service composition algorithm to the directory. Th...
DOCENG
2005
ACM
14 years 9 days ago
2005
ACM
Information Retrieval systems are limited by the linguistic variation of language. The use of Natural Language Processing techniques to manage this problem has been studied for a ...