Authors
Fikri Akdeniz, Hamza Erol
Publication date
2003/1/12
Journal
Communications in Statistics-Theory and Methods
Volume
32
Issue
12
Pages
2389-2413
Publisher
Taylor & Francis Group
Description
Consider the linear regression model in the usual notation. In the presence of multicollinearity certain biased estimators like the ordinary ridge regression estimator and the Liu estimator introduced by Liu (Liu, Ke Jian. . A new class of biased estimate in linear regression. Communications in Statistics-Theory and Methods 22(2):393–402) or improved ridge and Liu estimators are used to outperform the ordinary least squares estimates in the linear regression model. In this article we compare the (almost unbiased) generalized ridge regression estimator with the (almost unbiased) generalized Liu estimator in the matrix mean square error sense.
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