304 search results - page 42 / 61 » Selectivity Estimation of Window Queries |
VLDB
2005
ACM
14 years 1 months ago
2005
ACM
A “plan diagram” is a pictorial enumeration of the execution plan choices of a database query optimizer over the relational selectivity space. In this paper, we present and an...
SIGIR
2009
ACM
14 years 2 months ago
2009
ACM
A growing trend in commercial search engines is the display of specialized content such as news, products, etc. interleaved with web search results. Ideally, this content should b...
ISORC
2007
IEEE
14 years 2 months ago
2007
IEEE
Many emerging applications operate on continuous unbounded data streams and need real-time data services. Providing deadline guarantees for queries over dynamic data streams is a ...
SBBD
2003
13 years 9 months ago
2003
A common requirement of many scientific applications is the ability to process queries involving expensive predicates corresponding to user programs. Optimizing such queries is ha...
IADIS
2004
13 years 9 months ago
2004
The success of Web search is often limited by a variety of factors. Typical queries are vague and imprecise. At the same time, the Web is a dynamic and unmoderated collection and ...