483 search results - page 20 / 97 » Evaluating Top-k Selection Queries |
EDBT
2009
ACM
13 years 11 months ago
2009
ACM
In emerging applications such as location-based services, sensor monitoring and biological management systems, the values of the database items are naturally imprecise. For these ...
DOLAP
1999
ACM
13 years 12 months ago
1999
ACM
In this paper, we describe the design of a data warehousing system for an engineering company ‘R’. This system aims to assist users in retrieving data for business analysis in...
VLDB
1991
ACM
13 years 11 months ago
1991
ACM
In this paper we present a technique to optimize queries on deductive databases that use aggregate operations such as min, max, and “largest Ic values.” Our approach is based ...
ICDE
2007
IEEE
14 years 9 months ago
2007
IEEE
Estimating the selectivity of queries is a crucial problem in database systems. Virtually all database systems rely on the use of selectivity estimates to choose amongst the many ...
CIKM
2001
Springer
14 years 4 days ago
2001
Springer
Vocabulary incompatibilities arise when the terms used to index a document collection are largely unknown, or at least not well-known to the users who eventually search the collec...