619 search results - page 81 / 124 » Query Planning in Infomaster |
111
click to vote
PODS
2008
ACM
16 years 2 months ago
2008
ACM
We consider a fundamental flow maximization problem that arises during the evaluation of multiple overlapping queries defined on a data stream, in a heterogenous parallel environm...
215
click to vote
ICDE
2008
IEEE
16 years 3 months ago
2008
IEEE
Errors in estimating page counts can lead to poor choice of access methods and in turn to poor quality plans. Although there is past work in using execution feedback for accurate c...
150
click to vote
SOSP
2009
ACM
15 years 10 months ago
2009
ACM
Data-intensive applications are increasingly designed to execute on large computing clusters. Grouped aggregation is a core primitive of many distributed programming models, and i...
109
click to vote
AAAI
1990
15 years 3 months ago
1990
Temporal projection-predicting future states of a changing world-has been studied mainly as a formal problem. Researchers have been concerned with getting the concepts of causalit...
201
click to vote
VLDB
2004
ACM
16 years 2 months ago
2004
ACM
Ranking queries produce results that are ordered on some computed score. Typically, these queries involve joins, where users are usually interested only in the top-k join results....