SOP

Generalised additive P-spline regression models estimation using the separation of overlapping precision matrices (SOP) method. Estimation is based on the equivalence between P-splines and linear mixed models, and variance/smoothing parameters are estimated based on restricted maximum likelihood (REML). The package enables users to estimate P-spline models with overlapping penalties. Based on the work described in Rodriguez-Alvarez et al. (2015) doi:10.1007/s11222-014-9464-2; Rodriguez-Alvarez et al. (2019) doi:10.1007/s11222-018-9818-2, and Eilers and Marx (1996) doi:10.1214/ss/1038425655.

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