Open AccessImproved Liu-Type Estimator of Parameters in Two Seemingly Unrelated Regressions
Author(s) -
Jibo Wu
Publication year - 2014
Publication title -
isrn applied mathematics
Language(s) - English
Resource type - Journals
eISSN - 2090-5572
pISSN - 2090-5564
DOI - 10.1155/2014/679835
Subject(s) - multicollinearity , estimator , statistics , mean squared error , seemingly unrelated regressions , mathematics , minimum variance unbiased estimator , econometrics , trimmed estimator , bias of an estimator , regression analysis
We consider the parameter estimation in two seemingly unrelated regression systems. To overcome the multicollinearity, we propose a Liu-type estimator in seemingly unrelated regression systems. The superiority of the new estimator over the classic estimator in the mean square error is discussed and we also discuss the admissibility of the Liu-type estimator.
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