Estimation for Semiparametric Mixed-Effects Model with Longitudinal Data

In this paper, we consider the semiparametric mixed-effects model under longitudinal data. We use kernel weight function method and moment method to construct the estimators of fixed effects and individual effects. Asymptotic normality of the estimators are investigated, and the confidence region of the estimators of fixed effects is constructed. The simulations are reported for illustration, and the results are encouraging.