Abstract
This Special Issue is at the crossing between the long years efforts made by the organizers of the International Workshops on Functional and Operatorial Statistics (IWFOS) to promote advances in Functional Data Analysis and those made by the Journal of Multivariate Analysis (JMVA) to publish top contributions in this area. Precisely, the idea of this Special Issue grew up with the organization of the Fifth Edition of IWFOS that was initially scheduled to held in Brno in June 2020 but postponed for pandemic reasons to June 23-25, 2021 and organized online. In the same spirit as the recent Special Issues on FDA published in JMVA (see volumes 146 and 170), this Issue has been opened to a few related fields whose developments are deeply linked with those in FDA such as High-Dimensional Statistics and Complex Data Analysis. Also, this Special Issue has been opened far away from IWFOS-2020-2021 program to contain finally contributions from most of the world leading groups in FDA.
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