483 search results - page 25 / 97 » Evaluating Top-k Selection Queries |
ICDE
2010
IEEE
14 years 14 days ago
2010
IEEE
— When a database system is extended with the skyline operator, it is important to determine the most efficient way to execute a skyline query across tables with join operations...
VLDB
2001
ACM
14 years 1 days ago
2001
ACM
We are interested in de ning and querying views in a huge and highly heterogeneous XML repository Web scale . In this context, view de nitions are very large and there is no appa...
ICDT
2007
ACM
14 years 1 months ago
2007
ACM
Abstract. We study containment of conjunctive queries that are evaluated over databases that may contain tuples with null values. We assume the semantics of SQL for single block qu...
SAC
2009
ACM
14 years 2 months ago
2009
ACM
Effective peer selection for intelligent query routing is a challenge in collaborative peer-based Web search systems, especially unstructured networks that do not have any central...
ECIR
2010
Springer
13 years 9 months ago
2010
Springer
Prior-art search is an important task in patent retrieval. The success of this task relies upon the selection of relevant search queries. Typically terms for prior-art queries are ...