Sciweavers

1038 search results - page 44 / 208
» Space-Bounded Query Approximation
Sort
View
PODS
2005
ACM
115views Database» more  PODS 2005»
15 years 12 months ago
Histograms revisited: when are histograms the best approximation method for aggregates over joins?
The traditional statistical assumption for interpreting histograms and justifying approximate query processing methods based on them is that all elements in a bucket have the same...
Alin Dobra
ICDE
2010
IEEE
226views Database» more  ICDE 2010»
15 years 11 months ago
Approximation Trade-Offs in Markovian Stream Processing: An Empirical Study
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...
Julie Letchner, Christopher Re, Magdalena Balazins...
ERCIMDL
2005
Springer
82views Education» more  ERCIMDL 2005»
15 years 5 months ago
A Native XML Database Supporting Approximate Match Search
XML is becoming the standard representation format for metadata. Metadata for multimedia documents, as for instance MPEG-7, require approximate match search functionalities to be s...
Giuseppe Amato, Franca Debole
DKE
2007
119views more  DKE 2007»
14 years 11 months ago
Error minimization in approximate range aggregates
Histogram techniques have been used in many commercial database management systems to estimate a query result size. Recently, it has been shown that they are very effective to su...
Xuemin Lin, Qing Zhang, Yidong Yuan, Qing Liu
ICDT
2011
ACM
232views Database» more  ICDT 2011»
14 years 3 months ago
(Approximate) uncertain skylines
Given a set of points with uncertain locations, we consider the problem of computing the probability of each point lying on the skyline, that is, the probability that it is not do...
Peyman Afshani, Pankaj K. Agarwal, Lars Arge, Kasp...