641 search results - page 71 / 129 » Studying Query Expansion Effectiveness |
ICDE
2005
IEEE
14 years 10 months ago
2005
IEEE
Data warehousing and on-line analytical processing (OLAP) are essential for decision support applications. Common OLAP operations include for example drill down, roll up, pivot an...
SIGMOD
2006
ACM
14 years 9 months ago
2006
ACM
Consider an XML view defined over a relational database, and a user query specified over this view. This user XML query is typically processed using the following steps: (a) our t...
ICS
2005
Tsinghua U.
14 years 2 months ago
2005
Tsinghua U.
We consider a cluster architecture in which dynamic content is generated by a database back-end and a collection of Web and application server front-ends. We study the effect of t...
TKDE
2008
13 years 9 months ago
2008
Data stream management systems need to control their resources adaptively since stream characteristics and query workload may vary over time. In this paper we investigate an approa...
ICDE
2007
IEEE
14 years 10 months ago
2007
IEEE
Skyline query has been gaining much interest in database research communities in recent years. Most existing studies focus mainly on centralized systems, and resolving the problem...