A semiparametric mixture regression model for longitudinal data
A normal semiparametric mixture regression model is proposed for longitudinal data. The proposed model contains one smooth term and a set of possible linear predictors. Model terms are estimated using the penalized likelihood method with the EM algorithm. A computationally feasible alternative method that provides an approximate solution is also introduced. Simulation experiments and a real data example are used to illustrate the methods.
KeywordsCurve clustering EM algorithm finite mixtures growth curves
AMS Subject Classification62G05 62B99 62J07
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