Publication Results

Code: 47/2018
Title: PCA-based discrimination of partially observed functional data, with an application to Aneurisk65 dataset
Date: Tuesday 25th September 2018
Author(s) : Stefanucci, M.; Sangalli, L.m.; Brutti, P.
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Abstract: Functional data are usually assumed to be observed on a common domain. However, it is often the case that some portion of the functional data is missing for some statistical units, invalidating most of the existing techniques for functional data analysis. The developments of methods able to handle partially observed or incomplete functional data is currently attracting an increasing interest. We here briefly review this literature. We then focus on discrimination based on principal component analysis, and illustrate a few possible methods via simulation studies and an application to the AneuRisk65 dataset. We show that carrying out the analysis over the full domain, where at least one of the functional data is observed, may not be the optimal choice for classi fication purposes.

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Statistica Neerlandica, 2018, 72 (3), 246-264.