New local estimation procedure for a non-parametric regression function for longitudinal data
β Scribed by Weixin Yao; Runze Li
- Book ID
- 115225821
- Publisher
- Blackwell Publishing
- Year
- 2012
- Tongue
- English
- Weight
- 729 KB
- Volume
- 75
- Category
- Article
- ISSN
- 0952-8385
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## Abstract In this work we address the problem of estimating mean and covariance curves when the available sample consists of aggregated functional data. Consider a population divided into subβpopulations for which one wants to estimate the mean (typology) and covariance curves for each subβpopula
Longitudinal data are commonly analysed using mixed-effects models in which the population growth curve and individual subjects' growth curves are assumed to be known functions of time. Frequently, polynomial functions are assumed. In practice, however, polynomials may not fit the data and a mechani