2 papers
stat.ME2025
Functional Mixed effects Model for Joint Analysis of Longitudinal and Cross-Sectional Growth Data
Long Chen, Ji Chen, Yingchun Zhou
A new method is proposed to perform joint analysis of longitudinal and cross-sectional growth data. Clustering is first performed to group similar subjects in cross-sectional data…
stat.ME2025
Instrument, Variable and Model Selection with Nonignorable Nonresponse
Ji Chen, Jun Shao
With nonignorable nonresponse, an effective method to construct valid estimators of population parameters is to use a covariate vector called instrument that can be excluded from t…