100 search results - page 2 / 20 » Estimating Null Values In Relational Database Systems Based ... |
ICASSP
2011
IEEE
12 years 9 months ago
2011
IEEE
In this paper, an iterative channel estimation algorithm is considered in LTE systems. A simplified expectation maximization (EM) based algorithm is proposed for channel estimati...
ICDE
2010
IEEE
14 years 10 days ago
2010
IEEE
—Data compression techniques such as null suppression and dictionary compression are commonly used in today’s database systems. In order to effectively leverage compression, it...
CIKM
2005
Springer
13 years 11 months ago
2005
Springer
Accurately and efficiently estimating the number of distinct values for some attribute(s) or sets of attributes in a data set is of critical importance to many database operation...
BIOINFORMATICS
2006
13 years 5 months ago
2006
Motivation: Most previous approaches to model biochemical networks havefocusedeither on the characterization of a networkstructurewith a number of components or on the estimation ...
RSCTC
1993
Springer
13 years 9 months ago
1993
Springer
: While the common kinds of uncertainties in databases (e.g., null values, disjunction, corrupt/missing data, domain mismatch, etc.) have been extensively studied, a relatively une...