709 search results - page 103 / 142 » Efficient Evaluation of All-Nearest-Neighbor Queries |
168
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WWW
2005
ACM
16 years 6 months ago
2005
ACM
We consider the problem of efficiently sampling Web search engine query results. In turn, using a small random sample instead of the full set of results leads to efficient approxi...
162
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PVLDB
2008
15 years 5 months ago
2008
Summaries of massive data sets support approximate query processing over the original data. A basic aggregate over a set of records is the weight of subpopulations specified as a ...
257
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ECOI
2011
15 years 10 days ago
2011
The potential for physical flora collections to support scientific research is being enhanced by rapid development of digital databases that represent characteristics of the physic...
175
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ICDE
2010
IEEE
16 years 5 months ago
2010
IEEE
Estimation via sampling out of highly selective join queries is well known to be problematic, most notably in online aggregation. Without goal-directed sampling strategies, samples...
179
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CORR
2010
Springer
15 years 6 months ago
2010
Springer
Incorporating probabilities into the semantics of incomplete databases has posed many challenges, forcing systems to sacrifice modeling power, scalability, or treatment of relatio...