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Improving estimation accuracy of aggregate queries on data cubes

โœ Scribed by E. Pourabbas; A. Shoshani


Book ID
108113055
Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
371 KB
Volume
69
Category
Article
ISSN
0169-023X

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Effect of redundancy on estimation accur
โœ Alexandros Kretsovalis; Richard S.H. Mah ๐Ÿ“‚ Article ๐Ÿ“… 1987 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 773 KB

For a steady-state process the accuracy of reconciled data may he measured by the trace of its covariance matrix of estimation errors. Quantitative relations are derived for the effects of adding and removing single measurements on estimation accuracy. It is proved that redundancy will never adverse