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The Stata Journal
Volume 13 Number 2: pp. 329-336



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Semiparametric fixed-effects estimator

Franccois Libois
University of Namur
Centre for Research in the Economics of Development (CRED)
Namur, Belgium
[email protected]
Vincenzo Verardi
University of Namur
Centre for Research in the Economics of Development (CRED)
Namur, Belgium
and
Université Libre de Bruxelles
European Center for Advanced Research in Economics and Statistics (ECARES)
and Center for Knowledge Economics (CKE)
Brussels, Belgium
[email protected]
Abstract.  In this article, we describe the Stata implementation of Baltagi and Li’s (2002, Annals of Economics and Finance 3: 103–116) series estimator of partially linear panel-data models with fixed effects. After a brief description of the estimator itself, we describe the new command xtsemipar. We then simulate data to show that this estimator performs better than a fixed-effects estimator if the relationship between two variables is unknown or quite complex.
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