208 search results - page 23 / 42 » Efficient Computation of Multiple Group By Queries |
SIGMOD
2003
ACM
14 years 7 months ago
2003
ACM
The skyline of a set of d-dimensional points contains the points that are not dominated by any other point on all dimensions. Skyline computation has recently received considerabl...
PERCOM
2009
ACM
14 years 8 months ago
2009
ACM
Abstract--Presence, broadly defined as an event publishnotification infrastructure for converged applications, has emerged as a key mechanism for collecting and disseminating conte...
ICDE
2003
IEEE
14 years 9 months ago
2003
IEEE
XML path queries form the basis of complex filtering of XML data. Most current XML path query processing techniques can be divided in two groups. Navigation-based algorithms compu...
PVLDB
2008
13 years 7 months ago
2008
Many commercial RDBMSs employ cost-based query optimization exploiting dynamic programming (DP) to efficiently generate the optimal query execution plan. However, optimization tim...
LKR
2008
13 years 9 months ago
2008
Abstract. For clustering problems, many studies use just MAP assignments to show clustering results instead of using whole samples from a MCMC sampler. This is because it is not st...