483 search results - page 18 / 97 » Evaluating Top-k Selection Queries |
ICDE
2012
IEEE
11 years 10 months ago
2012
IEEE
— Accurate query performance prediction (QPP) is central to effective resource management, query optimization and query scheduling. Analytical cost models, used in current genera...
ICDT
2009
ACM
14 years 8 months ago
2009
ACM
This article deals with consistent query answering to conjunctive queries under primary key constraints. The repairs of an inconsistent database db are obtained by selecting a max...
SIGMOD
2009
ACM
14 years 7 months ago
2009
ACM
We present a complete XPath cost-based optimization and execution framework and demonstrate its effectiveness and efficiency for a variety of queries and datasets. The framework i...
SIGMOD
2002
ACM
14 years 7 months ago
2002
ACM
We present a continuously adaptive, continuous query (CACQ) implementation based on the eddy query processing framework. We show that our design provides significant performance b...
SIGMOD
2008
ACM
14 years 7 months ago
2008
ACM
A variety of web sites and web based services produce textual lists at varying time granularities ranked according to several criteria. For example, Google Trends produces lists o...