777 search results - page 89 / 156 » Optimization of Relational Preference Queries |
PVLDB
2010
13 years 8 months ago
2010
Recently, there has been increasing interest in extending relational query processing to include data obtained from unstructured sources. A common approach is to use stand-alone I...
HPDC
2000
IEEE
14 years 2 months ago
2000
IEEE
The dQUOB system satis es client need for speci c information from high-volume data streams. The data streams we speak of are the ow of data existing during large-scale visualizat...
CHI
2003
ACM
14 years 10 months ago
2003
ACM
Despite recent advances in natural language question answering technology, the problem of designing effective user interfaces has been largely unexplored. We conducted a user stud...
INTERACT
2003
13 years 11 months ago
2003
: Question answering systems have proven to be helpful to users because they can provide succinct answers that do not require users to wade through a large number of documents. How...
ICDE
1997
IEEE
14 years 11 months ago
1997
IEEE
Query optimization is an integral part of relational database management systems. One important task in query optimization is selectivity estimation, that is, given a query P, we ...