Results 151 to 160 of about 124,594 (211)
Some of the next articles are maybe not open access.

Related searches:

A hybrid estimator for selectivity estimation

IEEE Transactions on Knowledge and Data Engineering, 1999
Traditional sampling-based estimators infer the actual selectivity of a query based purely on runtime information gathering, excluding the previously collected information, which underutilizes the information available. Table-based and parametric estimators extrapolate the actual selectivity of a query based only on the previously collected information,
Yibei Ling   +3 more
openaire   +2 more sources

Estimation of Variance of the Ratio Estimator

Biometrika, 1982
SUMMARY A general class of estimators of the variance of the ratio estimator is considered, which includes two standard estimators vo and v2 and approximates another estimator VH suggested by Royall & Eberhardt (1975). Asymptotic expansions for the variances and biases of the proposed estimators are obtained.
openaire   +1 more source

On the Estimation of Contrasts in Linear Estimation

Calcutta Statistical Association Bulletin, 1973
This paper examines the conditions on the coefficient matrix of the linear model under which contrasts, and contrasts alone, are estimated by contrasts.
openaire   +1 more source

Home - About - Disclaimer - Privacy