964 search results - page 99 / 193 » Efficiently Ordering Query Plans for Data Integration |
130
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COMPGEOM
1994
ACM
15 years 8 months ago
1994
ACM
Ray (segment) shooting is the problem of determining the first intersection between a ray (directed line segment) and a collection of polygonal or polyhedral obstacles. In order t...
170
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CCGRID
2009
IEEE
15 years 8 months ago
2009
IEEE
From personal software to advanced systems, caching mechanisms have steadfastly been a ubiquitous means for reducing workloads. It is no surprise, then, that under the grid and clu...
142
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ICDE
2010
IEEE
16 years 4 months ago
2010
IEEE
Abstract-- A large amount of the world's data is both sequential and imprecise. Such data is commonly modeled as Markovian streams; examples include words/sentences inferred f...
234
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ICDE
2008
IEEE
16 years 6 months ago
2008
IEEE
We study the problem of computing query results with confidence values in ULDBs: relational databases with uncertainty and lineage. ULDBs, which subsume probabilistic databases, o...
223
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VLDB
2007
ACM
16 years 4 months ago
2007
ACM
Several recent papers have focused on OLAP over imprecise data, where each fact can be a region, instead of a point, in a multidimensional space. They have provided a multiple-wor...