1091 search results - page 77 / 219 » Approximation in Databases |
228
Voted
ICDE
2008
IEEE
16 years 3 months ago
2008
IEEE
Supporting top-k queries over distributed collections of schemaless XML data poses two challenges. While XML supports expressive query languages such as XPath and XQuery, these la...
102
Voted
CIKM
2009
Springer
15 years 9 months ago
2009
Springer
Histogram construction or sequence segmentation is a basic task with applications in database systems, information retrieval, and knowledge management. Its aim is to approximate a...
197
click to vote
VLDB
2009
ACM
16 years 2 months ago
2009
ACM
We consider the problem of using sampling to estimate the result of an aggregation operation over a subset-based SQL query, where a subquery is correlated to an outer query by a NO...
254
Voted
ICDE
2008
IEEE
16 years 3 months ago
2008
IEEE
In recent years, there has been significant interest in development of ranking functions and efficient top-k retrieval algorithms to help users in ad-hoc search and retrieval in da...
213
Voted
ICDE
2008
IEEE
16 years 3 months ago
2008
IEEE
Despite the surge of interest in data reduction techniques over the past years, no method has been proposed to date that can always achieve approximation quality preferable to that...