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SSD
2007
Springer
15 years 5 months ago
2007
Springer
We address continuously processing an aggregation join query over data streams. Queries of this type involve both join and aggregation operations, with windows specified on join ...
SIGMOD
2001
ACM
15 years 12 months ago
2001
ACM
We study the problem of generating e cient, equivalent rewritings using views to compute the answer to a query. We take the closed-world assumption, in which views are materialize...
ICRA
2006
IEEE
15 years 5 months ago
2006
IEEE
— The configuration space of a robot is partitioned into free space and C-obstacle space. Most of the prior work in collision detection and motion planning algorithms is targete...
FOCS
2008
IEEE
15 years 6 months ago
2008
IEEE
Relational joins are at the core of relational algebra, which in turn is the core of the standard database query language SQL. As their evaluation is expensive and very often domi...
AAAI
2011
13 years 11 months ago
2011
Behind every search query is a high-level mission that the user wants to accomplish. While current search engines can often provide relevant information in response to well-speci...