Discussion of “Estimation of Hilbertian varying coefficient models”

The suggested model covers a broad range of settings in functional data analysis and the proposed smooth backfitting method is advantageous. Here I discuss its relationship with several alternative approaches.

Keywords

functional data, random objects, semiparametric regression, structure identification

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The author was supported by the Research Grants Council GRF grant HKBU12304120, and by the Hong Kong Baptist University grant RC-ICRS-17-18.

Received 29 March 2021

Accepted 22 April 2021

Published 11 January 2022