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Autor:innen: 
Erscheinungsjahr: 
1999
Schriftenreihe/Nr.: 
Memorandum No. 1999,27
Verlag: 
University of Oslo, Department of Economics, Oslo
Zusammenfassung: 
We consider a framework for analyzing panel data characterized by: (i) a system of regressions equations, (ii) random individual heterogeneity in both intercepts and slope coefficients, and (iii) unbalanced panel data, i.e., panel data where the individual time series have unequal length. A Maximum Likelihood (ML) procedure for joint estimation of all parameters is described. Since it is complicated to implement in numerical calculations, we consider simplified procedures, in particular for estimating the covariance matrices of the random coefficients. An algorithm for modified ML estimation of all parameters is presented.
Schlagwörter: 
Panel Data
Unbalanced Panels
Random Coefficients
Heterogeneity
Regression Equation Systems
Maximum Likelihood
JEL: 
C13
C23
C33
Dokumentart: 
Working Paper

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