https://osorensen.no/tags/template-model-builder/Recent content in Template Model Builder on Øystein SørensenHugoenSat, 14 Mar 2026 00:00:00 +0000https://osorensen.no/papers/paper15/Sat, 14 Mar 2026 00:00:00 +0000https://osorensen.no/papers/paper15/We present an estimation procedure for nonlinear mixed-effects models in which the population trajectory is represented by penalized splines and adapted to individuals via subject-specific transformation parameters. By exploiting the mixed model representation of penalized splines, the level of smoothness can be estimated jointly with other variance components. The approach is illustrated through a case study on infant height growth. arXiv preprint.