There have been many researches on the minimax convergence rates for covariance matrices under various covariance classe......

In order to achieve dimension reduction for the nonparametric functional coefficients and improve the estimation efficie......

In many applications,including disease early detection and prevention,and performance evaluation of airplanes and other ......

The constraints of high-dimensionality(HD)and positive-definiteness(PD)presents difficulties for modelling covariance ma......

Longitudinal studies commonly arise in various fields such as psychology,social science,economics and medical research,e......

In longitudinal studies,outcomes are measured repeatedly over time.Therefore,repeated measurements are serially correlat......