… model variation across observations when N >1. In this sense, it also has the flavor of principal components … In the event that there is no theoretical model at hand, we may use ωj = 0, so …
CITATION STYLE
Fitting differential equations to functional data: Principal differential analysis. (2005) (pp. 327–348). https://doi.org/10.1007/0-387-22751-2_19
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