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Estimation accuracy (top row) and computing time (bottom row) for FUI (red) and FAMM (blue) from 200 simulations. Response is Gaussian and the true fixed effects functions are S1. The baseline setting is I = 50, J = 5, L = 50, SNRB = 0.5, SNRϵ =1. All other parameters are fixed at their baseline values when one sample size parameter is changed. Left column: number of subjects (I). Middle column: mean number of visits per subject (J). Right column: dimension of the functional domain (L).
